This is another random terrain idea with no set project in mind.
During the holiday season my wife likes to fill bowls with colored glass/marbles and put candles in them. Putting them away my mind started to think what else could be done with them. A trip to the craft store and in the floral department I found a jar of broken glass that had glitter in them. A quick spray of black paint (will need to do more when the weather is nicer to cover the glitter better) and I tried it out. The glass from the store has gone through a tumbler or something before they sell it so the edges aren't sharp but you still need to be careful when handling.
Could maybe seeing it being used in the future for a board or diorama with the nine riding out or just a patch of evil looking ground. Painted white with blue could be a broken ice field or maybe used as the rock bed in a river. The pieces are generally too big for bases but might work on the larger monster size bases.
For me, the glass has been put back into the jar until I think more on how to use it.