I think I may be almost finished mine - they came together sort of organically. Not sure if I am happy with them. Like the concepts, but wondering if I could do better. Or try a couple of other ideas. There's lots of crafting time, so who knows. Made a couple of things for inside the matchboxes and have found lots of things to stuff inside.
Things going well. I started on both my matchboxes, and things are going well, though I am waffling on making different matchboxes and seeing what turns out better - maybe if I have time. I am waiting for some things to dry now before continuing on others. Went through my stash and probably can fill the boxes just from my stash of goodies.
Do you have a surplus store in your town? I have seen cute little vials and phials with cork lids at my local surplus store. Also, take a look at places like dollar stores. At my local store, they sell microbeads in teeny little corked glass containers that would work for that too. Some bead stores may also sell their beads in corked glass containers.
As for the the GITD sand, what about subbing in glow in the phosphorescent beads, or taking microbeads, or sand, and painting them with phosphorescent paint. Or even painting a piece of paper or something and cutting out stars or shapes with it. Or there is phosphorescent powder too, which maybe your can clump up with something and make into your own GITD sand.
oh - what about taking sea salt or Kosher salt granules, a coarser grind, and mixing that with phosphorescent powder?