The art table at camp is not a craft corner. It teaches the same thing the court does: do it again, and look at what changed.
Leaf print
Roll a thin layer of ink or paint onto a leaf, place it on paper, cover it with a second sheet and press with the flat of your hand. Peel slowly.
String print
Dip a length of string in ink, lay it in a loop on one half of a folded sheet, fold and pull the end. The result is different every time, which is the point.
Two-colour cardboard plate
Cut shapes from thick cardboard and glue them down. Print once in one colour. Move the shapes and print again in a second colour that overlaps the first.
Clean-up that is not a fight
Newspaper under everything, one wipe per hand, and the prints drying somewhere nobody walks.