I can crochet and sew and stick stuff together...I've already thought of crocheting some cushion covers
Crocheted doilies? I have them everywhere including hanging out of the fronts of draws, draped over the corners of mirrors and in the corner of our living room I have them draped over an old wooden ladder DH painted white for me. I can bring the ladder out if I need a room divider or to screen off a mess. It's so useful and I love the way it looks.
Crocheted dishcloths in the colour/s of her kitchen? I think they look terrific stored in a large mason jar on the kitchen bench (plus they clean pots and pans really well). Mine are pastels and I roll them so they form a striped pattern around the jar.
Crocheted edges? She could hand/machine sew these to squares of fabric to make fancy place mats or table centres, attach them to hand towels in the bathroom or pillow cases in the bedroom.
Crocheted tissue box covers? We have two covers - bedroom and bathroom, but need a third for the kitchen box.