5mm LED Diffuser - Quick & Dirty

I was messing around with an Arduino prototype, but my water-clear LEDs were being both difficult to video and blinding to look at. I was using anything for a diffuser - paper, polythene bags, etc. (I had no pingpong balls or white straws - the usual suspects).

So, enter the printable, 5mm LED diffuser.

It's not pretty, but it's incredibly sturdy!