The ground waste walnut, hazelnut and peanut shells, strawberry seeds and black currant pomace were used as fillers of a polyurethane matrix processed to rigid rapeseed polyol-based composite foams. The foams were studied for mech. strength, brittleness, dimensional stability at elevated temp. In addn., an anal. of cell structure and thermal stability of the resulting materials was carried out. The products were recommended as cosmetic pumices.