Keep your pennies from flying everywhere with this backstop buttress.
"The few literate members of the horde were surprised to find their projectiles returned to them garishy painted with ribald couplets."
--Qie Zi, The Art of Seej
These are simple structures designed to keep your coins from wandering too far during a Seej match.
Combine with some corrugated cardboard to create a backstop behind your fortification.
Seej is an open-source tabletop wargame based around 3D printing. Rules for Seej are at s33j.net