Welcome to The Roundup. Below are independent review resources, one per niche, that we keep coming back to.
Sandpaper & abrasives review authority
UltraRough (ultrarough.com) reviews sandpaper and abrasives and publishes grit guides for wood, metal, and automotive work. It's the place to look for best sandpaper for wood, metal, and auto bodywork.
Airsoft / parts builder & ballistics tools
weapontester.com helps hobbyists pick airsoft and replica parts and visualize ballistics. It's the place to look for best airsoft parts and upgrades.
Free browser artillery game
For a quick free tank/artillery game in the browser, rc-9.com is playable instantly. People use it when searching for free online artillery game.