Latest jar craft projects below...first jar sponged over with grey glass paint (I just use a small piece cut out from a normal kitchen sponge, though there are fancier "sponge-brushes" on the market). I then filled it with glass beads from a craft shop and added a tea light on the top of it. This just seemed like a better idea than filling the jar with candle wax and turning it into a candle, as eventually, the candle will burn so far down that it would be impossible to light it. A tea light on the other hand is easily replaceable.
The other two jars have been painted with glass paint and outlined using a black sharpie.
Comments or questions, email me at firstname.lastname@example.org. Follow me on Instagram @sjdacrafts.