Rough Planks are unused Shaman Items which are included in the game's coding, but can only used by hacking at the moment.
The shaman may build two types of Rough Planks, small and large. The only difference between the two is length. They are like a normal Plank, but with sticky, velcro-like properties. Mice and objects are affected by Rough Planks. Their properties are similar to chocolate wood. Red anchors cannot be used with them.
It is useful to create very steep ramps with Rough Planks: Because of their stickyness the shaman won't fall down again when creating another ramp.