I started out wanting to build a smallish box to house my top off water and a few electrical items that didn't quite fit under the stand with the sump.
Then I made the age old mistake that gets me every time- I asked my wife's opinion. I know, what was I thinking?! Next thing I know I am building a full blown cabinet with room for the topoff tank (10 gallon rubbermaid can), room for all of my electrical, every fish accessory (i.e. test kits, scrapers, nets, etc), plus books and anything else that even looks remotely related to the tank! At least now I can move my quarantine tank out of the basement and keep upstairs now.