"My brother screamed as loud as he could "wolverine!". We still laugh about it."

My brother, aged 13-14 then, spotted a kangaroo a few kilometers inside the Italian border coming across from France.
(it was a deer. I still laugh about it...)

Anyway, with some cordage ,socks, bits from my hip belt, various pack straps and Gaffer tape, I should be able to come up with something.
The bark for soles could be a solution as would some long grass or fiber from certain trees.