I had a friend who gardened in the city. She grew pumpkins for her kids to use as jackolanterns in a big plastic pot. Then trained the vines up a piece of fencing and made hammocks for each little pumpkin. she had to resupport each hammock with a larger hammock as the pumpkins grew - she didn't realize that they would actually grow so well and get over a foot in diameter. It was really pretty with all the different colored fabric scraps that she used.