The other day, CRAFT posted a link to a fun tutorial at the fabulous site 365 Halloween: a pumpkin picture holder made of polymer clay and wire.
The instructions are for the kind of picture display that has a weighted base with some sort of holder or clip rising straight up; the photo sits in the holder. They're great temporary "frames": use them either when you want to change the holder a lot (as with seasonally themed holders), or when you want to change the photo a lot.
However, I think the project could go in another direction. Realistic fruits and vegetables made from polyclay are a major part of the miniaturist's art these days, so you could make just the polymer clay pumpkins, then use them as dollhouse miniatures. (They'd be more realistic with a sculpted stem, but they're OK as they are.) Use these pumpkins in the creation of a fall scene, or use them with some of your Halloween decor... you could, for example, string them into a garland, use one as a "knob" on top of a box, or make pumpkin-shaped drawer pulls by making them around a bolt. The uses are only limited by your imagination.