I made these candle holders by wrapping old crochet doilies around jam jars and popping a tea light inside. I'm sure there were raised eyebrows when I requested these doilies from a musty bag of old textiles, but I love how the light shines through the lacy patterns.
I've seen patterned tights chopped-up and stretched over jam jars to create a similar effect. I think it'd be especially lovely with some cosy cable-knit cream tights, but am reluctant to buy tights just to decorate jam jars!
All this lantern-making started as a dark-Friday-afternoon craft with my boys. We stuck tissue paper and sequins onto jam jars. I sprayed the jars with repositionable spraymount, which made this a much less messy craft project than if I'd let them loose with pva glue or glue-sticks (...nothing wrong with a bit of mess, but sometimes projects that take longer to do than to clean-up are what's needed).