usually in the isle where they have flower arrangement suff...glass marbles, polished river rock, that block of green spongy stuff. People use them as support for fake flowers in glasses vases...yeah, I know...I spend half my income at animal, craft, plant, and photo stores....If you wait till sundays, usually they have coupons and big sales in the paper for Joannes, Michaels, Hobby Lobby-(too expensive.) I'd rather use these then (like markc said) take them out of a river and ruining somone's home. :0) :Jo Ann fabrics,,, hmmm. What section of the store might thos rocks be located in? not into fabric stores so i dont know my way around em.