instructables. it's so whimsical and reminds me of my firefly catching days.
making it seems simple enough. take an ikea glass jar (one from the ikea slom series would do great) and place the parts of a solar garden light into the jar. use blu-tack to adjust and keep the parts in place.
to frost the jar, use a strip of tracing paper or a glass frosting spray. close the lid and you're done. keep the jar by the window with strong sunlight and the light sensing diode at the top of the jar will charge the batteries. when the light goes down, your sun jar lights up. makes a great gift too. link.