Awesome forethought - what ya got?

[Myka]

What's the coolest part about your system? What have you done to your system to make things better, faster, easier?

I'm not talking about dosers and ATOs, I mean things like automated or semi-automated water changes, super sweet fish room or under tank layouts that are well thought out and functional. Maybe you have some little trick/gadget that you use that you think maybe people haven't really thought of before.

What ya got?