So I now have $100 to Amazon. But I dunno what to do with it. I kinda wanted this in cash form, so I could save it up, and get a kick ... Mech, but might resort to more batteries and such. I did buy my 18650s for my DNA20 off of here. Maybe some blunt tip needles, maybe some more SS mesh. Are there any mods or useful stuff instead of rebuildable supplies on here?