Can I put the carved pumpkin in the refrigerator?

Watch where the pointy of entry is and seal this up. Try and keep sweets out of the fridge.

Pumpkins that are not carved carved pumpkins will stay mold-free for a very long time--weeks longer than carved ones. However, as vegetables, they will eventually decompose. How much longer depends...

Try scraping out the bottom portion of the pumpkin to make it more of an even surface. This should allow the tealight to balance on its own. If not, try...

No. Don't store food in your garage. You should divide the contents of your crock pot into 2-3 smaller containers, preferably covered.

Not forever, but you could preserve it for a long time using these methods. Buying a plastic pumpkin would be ideal if you wanted one to keep forever.

No, do not eat pumpkin that has been preserved in bleach.