Our lego ice cream stand. Complete with cones, toppings and many different kinds of ice cream!
We started simple and made ice cream sandwich out of brown and white legos then my kids went of making their own things. They used white legos for whip cream and brown ones for sticks to make Popsicle's.
My daughter ended up adding way more flavors she thought sounded good and we even ended up with a train to bring the ice cream on the go. Really it was neat to see what they could come up with.