[Syzygies]

I used to carry a bucket and sponge, then a squeegee, spray bottle, and paper towels. Now I just use a damp detailing towel (not wet enough to drip), and water from the nearest source down the hall. Sometimes one needs to clean the towel and make a second pass to obtain a board that looks newly installed, but generally no squeegee is needed.

Wrong person to ask about holders. I like gripping bare chalk; my hand is too forceful for a holder.