find those signs you see on the side of the road at election time.  make sure they are the plastic corrugated kind.  cut the width you like with grain, the direction the hollow channels run.  tape 4 or 5 layers together, (packing tape) staggering the seams, up to 100 cm works good.  then tape them to a pair of sneakers.
the corrugated plastic has plenty of give and durability and wont hurt the tramp