Making a base/charger for my Apollo ecig out of crystal blue PLA there is a bright blue LED at the bottom of the battery that stays on while it charges, so I’m going to embed the USB charger in the bottom so it glows blue when on it’s stand.
Very nice. That’s an eGo clone, right? I’ve got the Protank and an EVOD that I swap out on an iTaste MVP. Some people don’t like the size of it, but 2600mAh battery lasts for days and days and doubles as a USB battery charger. Some buddies at the lab are working on converting a sonic screwdriver 3D printed model over into something like this. 
DOH!@!!! SCREWDRIVER. AWESOme. yeah…it’s the bigger ego with the variable voltage.