Kids' birthday cake ideas are not too difficult to find. What little kid (or bigger kid, for that matter) doesn't love LEGOs? Whether you build the iconic studs (quick lesson: Yep, that's what those little bumps are called) out of cake or fondant, the end result will be totally amazing.
Whether or not you fill the cake with rainbow layers like this baker did, your kids will love nothing more than getting to color all over a pristine, white-frosted cake. Just give them edible markers and let them go at it!
This one's super easy—just bake your favorite chocolate cake, use a fork to scrape off a corner, and then pile all the bits you scraped off on top of the cake. Decorate with your favorite construction toys.
With a bundt cake pan and some clever thinking, you can probably make almost any number or letter ... but "3" is one of the easiest. Bake the round cake, cut it in half, mold the pieces into the number and stick them all together with frosting. Then cover with more frosting and M&M's.
Kids love celebrating their half birthdays, and what better way to honor them than with half a cake? Choose whatever their favorite kind of cake is, and simply slice it down the middle. Bonus: more leftovers for you.
White frosting, a big bag of Reese's Pieces and a nice round cake are all you need for this yummy dessert. Your kid can even help you place the little candies all over the cake in a basketball pattern. (The same idea would work well for a baseball or football, too.)
This cake looks harder (and more impressive) than it really is—just dot the outside with big white ovals of frosting, then add detail with colored icing. It's a little labor-intensive, but you'll get faster as you go... and your kid will be oh so grateful.
Perfect for a kid who still believes in fairy tales and magic, this cake is designed to lure a leprechaun in with golden coins ... and then trap him inside! It's actually a bundt cake, and pretzel bars—which the leprechaun will slip through—sit right under the coins.
This cake—along with flaming cupcakes—is much bigger than it looks: It's actually made of four half-sheet cakes. Bright red buttercream frosting tops off the cake, along with a few little candies for various accessories.
With Kit Kats as bulldozer crawlers and a solid piece of chocolate to act as the shoveling blade, this tractor is easy to put together—and with tons of yellow frosting smothered over the entire thing, nobody will notice if you make a mistake.
As pretty as this cake is at first look, it's what's under that candy-covered chocolate shell that's really exciting: There's another big pile of candy sitting inside the shell and on top of the cake, just waiting for your kids to break into and find.
Surround a cake with chocolate sticks, cover it in blue frosting (don't even worry about being precise—it's the imperfections in the icing that make the waves) and top with your favorite bath toys to make this cake.
With gobs of pink frosting, fluffy marshmallows and paper hearts, can you really go wrong with a castle cake? Upside-down ice cream cones serve as turrets, with wafer cookies serving as doors and windows.
Decorate each layer of this cake separately, then top the larger round cake with the smaller one. Cake balls serve as eyes, and bright colored frosting is perfect for the rest of the detail on these friendly monsters.
With just a little dedication, you can make this beautiful, looks-like-it's-from-the-bakery cake all on your own. Just dye buttercream frosting several of your favorite flavors, and use a piping tip on your frosting bags to create the pretty little stars until they cover the cake.