Last year or so, I went to a Home Despot to get a pipe-cap to make a “quick” (har…) charger for my Q8, and wanted to make sure anything I’d buy would fit, so I brought the donk with me.
Oldster who knew his shtuff guided me to the different sizes, etc., but asked what I wanted it for (kinda odd asking for a pipe-cap but no pipe or nuttin’), and I showed him. “That’s a flashlight??” “Yeh.”
Quick 2click to turbo, and he was all like, “Holy Shiite, that’s bright!”. I just smirked. 
I love doing that.
Speaking of which, anyone know how to thread the inside of a cap to fit onto a Q8’s battery-tube? Hand-tools only, no lathe or other fancies… 