The latest gimmick that your kids will want are the Sponge Bob Square Pants drink. It costs $12.75 and is a big huge yellow square, just like the character. It holds about 2 cans of coke.
Refills on the day you buy it are .89 cents.
They're everywhere, and your kid will want one. We brought one home for our daughter, and she was smiling, and hugged it. Well worth the $13 bucks you'll spend.