Okay, I have one for the jar. I hope you'll see the humor in it. It is very affordable and fun too.
A long time ago my wife and I made Pickled Bums

... yes you read that right.
Here's what you need
An old canning jar (any jar will do)
Some pillow stuffing
A few pieces of old nylon stockings (washed please)
Some pickling spice
Small squares of fancy fabric
A ribbon
A needle and thread
Cut the nylon into small squares, different sizes but start an inch by an inch
fold it over the pillow stuffing and gather it at the back
tie it with the needle and thread, pull the needle around to the front and stick it through the nylon and stuffing
pull tight and tie, congratulations you just made a bum. I dare you to make one without laughing.
Put your bum in the jar, make enough bums to fill the jar and put the pickling spice around them.
Put the lid on the jar and finish with the fabric and tie with a ribbon.
For people that have no imagination we put little labels titled "Pickled Bums". Put a best before date too.
This is a great prank gift idea for an office party or other gift exchange. They're easy and fun to make and you might even have all the stuff you need in the cupboard all ready.
Believe it or not, we sold lots of these for $3 or more depending on the size of the jar. I just put them out at work and took orders. That was a long time ago, maybe it's time to bring back the bum!
Have fun with it,
Brian