Microphotography Phone Adapter

This is a remix of a holed clip to mount a 7mm collimating lens in it. We use it in outdoor activities with students!

You must buy the lens to complete the model. You can get one from here:
https://www.ebay.com/itm/10x-7mm-Dia-Plastic-Laser-Focusing-Lens-Collimating-Lens-for-Laser-Diodes-Focus/282994740946

You can also salvage the lens from a laser pointer (although it's difficult to find 7mm laser pointers I think), or get a glass lens from inside a old webcam lens.