For something I use all day every day? This small shelf with lots of side pockets to hold all of my electronics!
I needed somewhere I could place my kindle, cell phone, tablet, all the remotes, a mug of coffee, and a small plate of snacks, but I didn’t want it on the floor. It has worked stunningly well, and one of the few projects that I have made that worked perfectly the first time!
I wrote more about it here: Wall electronics pocket / coffee shelf / sofa side table?