Larger pumpkins interspersed with candles make a pleasant centerpiece (if you do have time to DIY, paint a few in metallic shades; the shimmer will go nicely with your holiday china and sterling).
If berries are still booming in your area, twining them around a few pumpkins brings a festive note to the table (and you can always cheat with a few branches of berries from Hobby Lobby!).
Don't put away your summer vases just yet - they'll look marvelous filled with baby pumpkins.
If you're really short on time, grab a small serving tray and let nature do the rest.
And my favorite - a pumpkin cooler!
/Images/ White pumpkin centerpiece via HGTV/ Berry-wreathed pumpkins by photo stylist Karin Lidbeck/ Orange pumpkins in glass/ White pumpkins in glass, via Better Homes and Gardens/ Pumpkin line-up via Good Housekeeping/ Pumpkin party cooler via Martha Stewart/
Now, how hard was that?