Dig a very large hole and layer the bottom with about a
foot of ash. Then put a line of peas around the top of the
hole. When the elephant comes to take a pea, kick him in the
ash-hole.
A friend and I pulled a similar stunt on a co-worker some time back.
After a long series of joke-perpetrating back and forth, we procured
a rather large box and filled it with packing 'peanuts', then proceeded
to cut a large hole in the bottom and invert the box on the victim's
desk....