If you're not planning on decorating for Halloween or want something autumnal that can hang around through Christmas & Hanukkah, a hand-sewn velvet pumpkin from Terrain might just be the thing. There are three different sizes & a portion of the price is donated to The Learning Community, a non-profit dedicated to providing free parenting resources.
For more traditional ideas (& really last-minute ideas), see Martha Stewart's pumpkin pages.
A cute (& free) downloadable Halloween card (with envelope) to color.
If you're not into the whole earth tone thing, here's a white pumpkin with pink flowers.
And no one does better round-ups than Kim. 101 Festive Fall Tutorials.
(photograph via Terrain)