YG300 Projector Lens Cap

This is a Lens Cap for the cheap YG300 Projector found on Chinese eCommerce sites. It is held in place with a rubber band (that can also be used to keep the cap on top so you don't loose it while in use. I got mine on Aliexpress (when it was on sale), but I recommend getting it from Banggood or eBay. Mine did not come with a lens cap which sucks for a portable projector, so I made one!
I thought about making a press fit cap, but that might put extra stress on the lens and would wear out fast.