Quick felt projects - cut shapes of Christmas trees, Easter eggs, ice skstes, bunnies, etc.
Crafters put two together (they don't have to worry with felt for front and back if they have poor vision. Then just do a oversized whipstitch around the edges. These are very forgiving if the stitches are not even.
They can add sequins - if that's too tiny of work, they can decorate with markers in so many shades.