If you painted your pumpkins this year (or decorated them in some other way that didn't break the rind), you can likely reuse them in a myriad of ways in the kitchen. But even a carved pumpkin that's rotting fast can be put to use in a way that will eventually return to your kitchen:
Compost it! Use it as compost to enrich the soil in a garden or planter. This can be done in a couple of ways: For those with a compost bin or pile, smash up ol' Jack and add him in - it will easily break down and contribute to a nutrient-filled compost for enriching your soil. Even without a compost system in place, you can simply bury a used jack-o-lantern and it will break down in the soil. Adding it to the garden will give life to wonderful new fruits and veggies to be enjoyed next year!
Related: Pumpkin For Breakfast, Dinner, & Dessert: 15 Scrumptious Pumpkin Recipes
(Image: Flickr member joeshlabotnik, licensed for use under Creative Commons)
Straw Mat from The ...

You can feed the seeds to the birds also. Cornell suggests you roast them and / or put them through a food processor ( assuming it's tough enough) then put them out for jays, chickadees and nuthatches. Best bet is on a feeder tray near a bush so cat's won't eat the birds.
This picture is disturbingly gross! Good reminder on the composting.
Oh that nasty pumpkin just turned my stomach. Good idea for composting. But seriously. That is gross.
i don't think i'd want to put mouldy bits in my food processor or oven! but good ideas about feeding birds. as long as you don't attract rats either.
Yes I agree, moldy food should be avoided for use in kitchen and for birds as well; I'd never let my display get to that point, even before composting. But if it's fairly fresh and just sagging, do the above. Not likely to attract rats if you put the seeds on a feeder stand.
Aren't the pumpkins used for jackolanterns different from the ones you cook with? I thought they were, which is why I would hesitate to use them in the "myriad of ways". Anyone know?
Be careful about the rotted pumpkins...I know that they are quite toxic to humans, don't know about animals.
Pumping is great way to use for many designs, the hollowing designs are great if you are looking for some horrified design for garden. get some garden tricks here : www.marathi-unlimited.in