Growing tired of using cotton balls for my flaming wrecks when playing Flames of War, I finally decided to make my own smoke plume markers. While the first attempt took me a few hours, I'm finally proficient in making 5 in about 20 minutes (that's not including glue drying time).
Once my sample of RTV arrives in them ail (any day now) I'm going to make a 2 part mold of a few of these and try casting them with resin. I'll post up more on that project when it arrives.
if you are interested in acquiring some of these, I'm selling them $5 each, or 5 for $20. Just send me an email and I'll contact you with the specifics.