FreeLowPowerLab Moteino, Moteino MEGA Mount
Thingiverse
6 model
Free
FreeUltra thin scraper / print remover
Thingiverse
FreeLow Cost DIY Power-Meter and Switch Zigbee or WiFi
Thingiverse
FreeAutomatic Power Off after print V2 - low voltage version
Thingiverse
FreeLED Sticks: A Modular, Low Power, LED Light System for 3D Printers #LightItUp
Thingiverse
Freetrackmaster lowlower
Thingiverse