Right, these are not things you can find at Walmart. Flylady.net sells them and buying from her is a good deed. Petsmart also sells them.
I also can't live without my handheld rubber scrubbie. It's the same thing as the handled kind but small - I use that on my upholstery and the carpeted stairs to get off hair and crumbs.
So those are two must haves for me. They make my life simpler!
I also use a timer for cleaning, white vinegar in a spray bottle with water (1:1), Pledge Multisurface Spray Cleanser in Lavender, Murphy's Oil soap for wood, and Meyers Geranium Scented Window Spray. That last one smells divine.
I also have to keep Hot Shot on hand for pet accidents.
I also use cotton cloths and microfiber rags for cleaning, instead of paper towels.
In the shower stall, i keep my Little Green Machine and a small Stinger Shop Vac with a ton of attachment choices.
Lastly I have disinfecting wipes that i use all the time for sanitizing and quick touch-up cleaning. I compost those afterward.