A $100 iPad-style computer tablet for the school-aged set is turning out to be one of the hottest, hard to get items this holiday season.

LeapFrog’s LeapPad Explorer is among a list of popular toys that could become scarce closer to Christmas, industry analysts said.

Besides the LeapPad, other hot sellers at risk include the Angry Birds Knock on Wood Game, Xia Xia Hermit Crabs and BeyBlade Metal Masters.

Hot toys, short supplies

Topsy Tumblers Fun Park

LeapPad

Angry Birds Knock on Wood game

Lalaloopsy Silly Hair Dolls

Laguna Blue’s Hydration Station

Xia Xia Crabs

Fijit Friends

FurReal Friends Cookie

Ultimate Optimus Prime

Beyblade Metal Masters Triple Battle Set

Nerf Vortex Nitron

Air Hogs Hyperactives

Source: BMO Capital Markets

Amazon Still has it in stock along with others on the Hot Toys List of 2011.

Kmart:

1. Let’s Rock Elmo
2. Mattel Fijit
3. I am T-Pain Microphone
4. Barbie Designable Hair Extensions and Doll
5. Lite Sprites Lite Wand, Prisma and Pod
6. Redakai Championship Battle Tin
7. FurReal Friends Cookie My Playful Pup
8. Nerf Vortex Nitron Blaster
9. Mini Lalaloopsy Treehouse Playset
10. WWE Colossal Crashdown Arena
11. Transformers Mechtech Ultimate Optimus Prime
12. LeapPad Explorer Learning Tablet
13. Lazer Stunt Chaser R/C Vehicle
14. Simon Flash
15. Dora Fiesta Favorites Kitchen

TRU Holiday Hot Toy List include:

• Poppin’ Park Elefun busy ball popper from Playskool–An elephant-shaped toy that shoots balls for baby to crawl after.

• Topzy Tumblers Twirlin’ Tumblin’ Fun Park from Fisher-Price–A play set designed to keep babies entertained while developing key motor skills.

• Sesame Street Let’s Rock! Elmo from Hasbro–An interactive Elmo doll with a drum, tambourine and microphone that performs for and with kids.

• You & Me Hide and Seek Friends from Toys ‘R’ Us–Interactive dolls that play peek-a-boo and ask for snacks.

• Angry Birds 5-Inch plush from Commonwealth–Five-inch plush loaded with sounds taken from the mobile game.

• Cabbage Patch Kids limited vintage edition from JAKKS Pacific–Classic Cabbage Patch dolls from the 1983 designs.

• Disney Rock Star Mickey from Fisher-Price–A Mickey doll with shades and a guitar that performs three songs.

• Fast Lane Stunt City from Toys ‘R’ Us–An exclusive 100-piece track set with a motorized launcher, looping action, a moving crane, more than 12 pieces of track, a buildable cityscape and two included cars.

• Imaginarium City Central train table from Toys ‘R’ Us –An exclusive wooden train table with over 100 pieces, an espresso finish, lights and fun train sounds, a working crane with magnetic grapple, a Train Wash Station with water sounds and an Airport Tunnel.

• Lalaloopsy Silly Hair dolls from MGA Entertainment–Each doll comes with a fun hair styling brush, four clips, six hair beads and a pet whose tail can also be styled.

• Power Rangers Samurai Megazord from Bandai–The action figure comes with a Katana sword that can be sheathed in its waist or unleashed for battle.

• Power Wheels Dune Racer from Fisher-Price–A  child-sized dune buggy with a built-in storage compartment hidden under the hood that goes up to 5 MPH forward or 2.5 MPH in reverse.

• Bizu Style Studio from Spin Master–A customizable bead activity kit helps kids build four customizable bracelets that can be easily twisted to create a small animal friend.

• Disney-Pixar Cars 2 Lightning McQueen vehicle from Spin Master–A talking, radio-controlled version of Lightning McQueen from Cars 2.

• Hot Wheels Wall Tracks starter set from Mattel–A Hot Wheels track set that leaves the floor and sticks directly to walls using 3M Command strips.

• iMarker digital stylus + Crayola ColorStudio HD app from Crayola–A digital coloring book app for iPad.

• InnoTab from VTech–A tablet made just for kids with calculator, calendar, notepad, address book, clock, photo viewer, MP3 player and SD card slot for memory expansion.

• LeapPad Explorer from LeapFrog–A a touch-screen tablet-like device for kids with built-in camera and four included apps.

• Monster High Fearleading three-pack from Mattel–An exclusive set of three fashion dolls.

• Mario Kart Wii Bowser’s Castle Ultimate building set from K’Nex–An exclusive play set featuring more than 650 pieces.

• Moshi Monsters Moshling mini-figures three-pack from Spin Master–An exclusive line of plastic figurines with more than 30 available in the collection.

• Radica Fijit Friends from Mattel–nteractive robotic toys available in four different personalities.

• Redakai X-Reader starter pack from Spin Master–A trading card game that features 3D and animated effects.

• Transformers Dark of the Moon Ultimate Optimus Prime from Hasbro–An Optimus Prime action figure that can change into three different modes.

• The Trash Pack Garbage Truck from Moose Toys – An exclusive collectible toy that includes a truck and two special edition Trashies, Sludge Can and Dead Tire.

• Xia-Xia from Cepia–A set of four colorful, collectible hermit crabs.

• Air Swimmers eXtreme from Animal Planet–Oversized, lightweight fish-shaped metallic balloons that “swim” through the air using radio control.

• Fast Lane JLX Matrix from Toys ‘R’ Us–An exclusive motorcycle radio controlled motorcycle.

• Heroica Castle Fortaan from LEGO Systems–A 304-piece buildable board game in the Heroica game series.

• I Am T-Pain mic from CDI, a division of Jakks Pacific–A microphone using the T-Pain Effect, voice modification made famous by the musician T-Pain.

• My Keepon from Wow! Stuff–An exclusive robot that stands two tennis balls high and features touch mode and dance mode.

• NERF Vortex Vigilon from Hasbro–A NERF blaster that launches foam discs up to 50 feet.

• Ninjago Lightning Dragon Battle from LEGO Systems–An exclusive 645-piece construction set from the LEGO Ninja Universe.

• “Skylanders: Spyro’s Adventure” from Activision–A video game for Wii, PlayStation 3, Xbox 360, PC or Mac.

• Air Hogs Hyper Actives from Spin Master – A dune buggy-inspired vehicle reaches speeds up to 20 mph.

• HALO Anniversary Edition: UNSC Warthog from Mega Bloks–An exclusive 734-piece construction to build an authentic reproduction of the iconic M12 Warthog featured in the Halo universe.

In addition, the company has also released its list of the “Fabulous 15,” a short list of the new toys it considers the best of the holiday season. They are:

• Air Hogs Hyper Actives from Spin Master
• Air Swimmers eXtreme from Animal Planet
• Lalaloopsy Silly Hair dolls from MGA Entertainment
• LeapPad Explorer from LeapFrog
• Monster High Fearleading 3-Pack from Mattel
• Moshi Monsters Moshling 3-Pack Mini-Figures from Spin Master
• My Keepon from Wow! Stuff
• NERF Vortex Vigilon from Hasbro
• Ninjago Lightning Dragon Battle from LEGO Systems, Inc.
• Poppin’ Park Elefun Busy Ball Popper from Playskool
• Power Wheels Dune Racer from Fisher-Price
• Radica Fijit Friends from Mattel
• Sesame Street Let’s Rock! Elmo from Hasbro
• “Skylanders: Spyro’s Adventure” from Activision
• The Trash Pack Garbage Truck from Moose Toys

Though I think the list might be much shorter for any kid above the age of 2 – it’s a handheld touchscreen device starting with the letter i.