There is always lots of talk of the expensive gear we either own or lust for but not much attention is given to those little hidden gems we discover along the way.

So, I thought I would start a thread covering just that. What is your most treasured hidden gem that you just wouldn't want to do without? Whether it is a store bought item or a DIY gadget you put together?

The reason that I thought of this and bringing it to light was today I received the Neewer Pro Pop-up Flash Diffuser from Amazon for $7.50 (free Prime Shipping) and I think it is really going to work out very well for me. I have tried many different on-flash diffusers and reflectors for speedlights and they either didn't stay on well or they were so heavy that when the flash was pointed slightly upward, the head just fell back down from the weight.

This one stays on very well and I like the diffusion of light that it gives.

http://www.amazon.com/Universal-Diff...flash+diffuser


Anyone else have recommendations they would like to share?