rubble

[Clown]

id do it,
just make sure they are very clean.

[justinl]

lol an old has been dug up! in the end i just took a larger piece of LR and smashed it up... it at least is porous unlike pebbles. plus when a mantis uses rubble to make a home it needs irrregular pieces to fit together and i dont think smooth round pebbles would serve very well.