beer bottle cap candles, burn 1 to hours ~ great for travel or to use when you're entertaining on the deck at night.soooo easy to make! These would make adorable little gifts bundled in a bag and tied with a string for stockings etc.
Homemade glue : Flour, sugar, water & white vinegar = better cheaper Mod Podge (brand of glue useful for collages and other projects where you want to stick things down or seal a surface). It's too expensive.
FN FCU Fire Control Unit for Grenade Launcher mounted on a SCAR Assualt Rifle. The Fire Control Unit makes successful target engagement LV tube-launched grenades less challenging replacing leaf sights maximising first-round hit probability.