Swipe art is good for older people with limited hand mobility. Put dots of paint on the paper or canvas then let the participant swipe with different tools: small heavy cardboard, sponge, flexible brush, the butt of a closed hand, etc.
No to find a lint roller. Take a sticky roll lint remover, add some raised craft foam shapes and you have a great new way to stamp out some art! You can peel off the outer layers and make a different one - Endless possibilities!