Yep, Family Fun has some cute ones. Also check out http://www.kraftfoods.com/kf/
Right now they have the CUTEST swim cake - you've got to see it! Oh where do these people find time to come up with these things? LOL
1 pkg. (2-layer size) cake mix, any flavor
2 cups boiling water
2 pkg. (4-serving size each) JELL-O Brand Berry Blue Flavor Gelatin
1 cup cold water
1 tub (8 oz.) COOL WHIP Whipped Topping, thawed
56 Mini OREO Bite Size Chocolate Sandwich Cookies
6 TEDDY GRAHAMS Graham Snacks
5 LIFE SAVERS GUMMIES
4 gummy fish
PREPARE cake batter and bake in 13x9-inch baking pan as directed on package. Cool completely.
INVERT cake onto large platter; remove pan. Using a serrated knife, cut and scoop out a shallow rectangle from center of cake, leaving a 2-inch border of cake on all sides and a thin layer of cake on the bottom. Reserve removed cake for snacking.
STIR boiling water into gelatin in large bowl until completely dissolved. Stir in cold water. Refrigerate about 1-1/4 hours until slightly thickened (the consistency of unbeaten egg whites). (Or, see Tip below for a quicker set method.) Pour thickened gelatin into center of cake. Refrigerate 3 hours or until set.
FROST borders of cake with whipped topping. Decorate with remaining ingredients as desired to resemble a swimming pool. Store in refrigerator.
KRAFT KITCHENS TIPS
Insert gummy fish and octopus candies into gelatin "pool" before refrigerating for an added treat!
Take a Shortcut
For a quick-set gelatin, simply add 4 cups ice cubes to the dissolved gelatin mixture in place of the 1 cup cold water; stir until gelatin begins to thicken, about 8 minutes (spoon drawn through leaves a definite impression). Remove any unmelted ice. Pour thickened gelatin into center of cake; continue as directed.