To clean your tank? I like a turkey baster. I can agitate the sand, blow off the rocks and behind the rocks, feed the corals. It's like the most used non fish tool I use. What do you guys use?
I also use the Easy Blade attachment on my MagFloat. I wouldn't live without it.
In my 10 gallon tank, I don't have any filter or skimmer. An oily sheen, particles and dust tend to collect on the surface of the water. Every couple days I take a plain white paper towel, lay it on top of the water, and lift it back up. The paper towel quickly collects most of the crap that was on the surface.