First, here is a very simple one, just to get back into the groove. It literally took me less than ten minutes to make this prop for this year's LARP, "The Strange Tower High in the Mists." Even though it is very simple and easy to make, I think it makes a pretty decent prop for a game like this.
The Game Master and I were texting each other about props needed for the game, two days before the show. One of the things he said he needed was some dynamite. Just a few sticks would do. So in the midst of working on other projects, zip zip zip, I whipped these out super fast.
Et voilà! Four sticks of prop dynamite in under ten minutes. It actually took me more than twice as long to make this post than it did to make the prop!