hi, i have used soap slices for years. when i was a kid i don't think they even had marking pencils..lol.. for all you liquid soap users, maybe you can buy a small soap from a motel and use it in the shower untill it gets thin...i think it is the best and costs nothing.. also for all you sewers, if your sewing on fleece, soap is the best marking tool and it shows up great..i'm making a fleece jacket now and the soap is the only thing that i can see..suzanne