A simple multi use light mount that hooks to the top of a Anycubic i3 Mega. Hardware is 1/4" - 20

The led lamp i have is not available anymore but here's a similar version that you may have to modify for:

Rechargeable Touch Tap Light,15 LED Stick-anywhere Closet Lights By OUNIER,Portable Dimmable LED Night Light,Cordless Push Light,Touch Sensor For Outdoor Camping, Hallway, Bedroom, Kitchen, etc