There was another mention on the board re a sort-of putty that had some very interesting uses. I don't remember the name "plumber's putty," though. My mind is giving out and the only names I remember for it are "museum putty" and "tac." The "tac" name was associated with a specific maker of the stuff.
I buy tac at an artist supply store in Jacksonville, FL. The bright yellow box advertises that it sticks again and again, is non-toxic, and is clean and safe. It does something else wonderful. It does not bleed color onto paint, wood, etc. I have used it for years and never had trouble with it.
Please be aware that my sewing uses for tac have no physical contact with my machines or the project fabric. I use it to stick notes, patterns, etc. in front of my nose for quick access. I do tack up samples, emphasis on "samples," of things so I can find them while I am at a machine. (Okay, I am messy. Tac helps keep track of stuff.) It also keeps stuff where you put it: posters on a wall, a vase on a table. Lots of uses around the house and in an rv.
I hope my long windedness has helped. The help and patience all of you have gifted to me in the past and probably will do again in the future have been help in some trying messes. Thanks.
Pat