We used to make nitrogen triiodide at school. It was a prank explosive. Well it was until we destroyed a whole fume cupboard with it. Blew the glass out.
Nitrogen has eternally had my respect after clearing that mess up.
Make your own (insert disclaimer about this being your problem if you blow yourself up): iodine crystals from eBay/amazon + ammonia concentrate from the same. Mix small amount together, leave to crystallise on a coffee filter. Tickle with a feather or add some jam before it is dry to attact flies (it will blow them up when they land on it). It's relatively safe when wet but the moment it's dry its incredibly unstable.
Nitrogen has eternally had my respect after clearing that mess up.
Make your own (insert disclaimer about this being your problem if you blow yourself up): iodine crystals from eBay/amazon + ammonia concentrate from the same. Mix small amount together, leave to crystallise on a coffee filter. Tickle with a feather or add some jam before it is dry to attact flies (it will blow them up when they land on it). It's relatively safe when wet but the moment it's dry its incredibly unstable.