Have you seen these pop cap candles?
There is a great tutorial at The Junk Nest
(Draft Magazine said they should burn about 1.5 hours each.)
Or how about this cap?
This look is from here ...
shall we keep going?
How about candles in sea shell? Imagine these scattered everywhere. Lovely!
There are several more candle ideas at Recycle Reuse Renew Mother Earth Projects
So much fun!
(she has the bottle caps too, and many other things, including Altoids tins!)
I've seen them in tea cups (here and here), but here they are in candy dishes and dessert cups and goblets - from Frugal Living
Oh my! What can I put candle wax in to make a beautiful candle?
Don't wanna make em?
Then just decorate a tea light with washi tape like these from Lebenslustiger
I do love candle light!