ok i got an order, but only requirements were to put happy 75th birthday sweetheart and look honey $2.99 (from that commercial with the tiny burget and drink.) sheet cake so i was thinking of making a tiny burger and drink, but any ideas please help.

Oh, that's different...must be some kind of inside joke? A sheet cake would work. Fondant mini burger and drink??/? We gotta see pictures when your done!

Depending on how many people this cake will feed you can adjust your cake size.
But I think you should make the outline of a female figure. You use the small half ball pan (the proper name escapes me right now) for her breasts then you trim out her waste by cutting away 2 small half moons where her hips should begin. You cover her with a bc bikini and the rest is skin coloured bc. You can put the $2.99 price tag on her belly.
This is just food for thought.

For the mini burger, I've bought Spongebob Crabby Patty gummi candy at Michael's craft store before, they would be perfect. Maybe in the background you could do something to resemble a fast food restaurant or something. Or make the cake in the shape of a Happy Meal Box or something. Looking forward to seeing what you do with this!