I have made some figit quilts. I try to have different textures and activities in fabrics that might be interesting to adults (corduroy, velvet, fleece, satin, flannel, upholstery fabrics, themed or patterned fabrics, etc.) I like to make doors with surprises behind them and zippers that have something behind them. There are many ideas on Pinterest. Some people simply use fabrics that are interesting to touch. The important things are that they should be small (they are not blankets) and they must be machine washable and machine dryable. My mom had Alzheimer's and she loved flipping pages in books.