My thoughts were for outdoor use at first. Was wanting some way to simulate a small explosion while moving through areas. Like, ... while moving by a "disabled" vehicle... small explosions at various places adding to the effect, or simulating a air to surface SRM from a "airstrike" from an Apache in a specific area.
The way they work though, I doubt the things can be set off like that... unless remotely done somehow in correct sequence.
I've seen the non-Supercell Mines and Claymores operate before, just not the powder/water shot ones. ( I do not want to use water , especially when cold outside.)
I didn't think about powder being bad for equipment though, so that idea is now scrapped on my end.