Tip Smoke
I was going to put smoke cartridges on my wingtips but "pyrotechnic devices including smoke bombs" aren't covered by AMA insurance.... BS....
I tried to contact our fearless AMA leaders (ahem) but of course they were too busy working (ahem) to reply to me, whether I need a special waiver or what not....
Considering where I fly at (an airport), I'd rather not take a chance....