Hi im 9 years old and i want to know for what are the nails on runescape?? because i found some?

if your a member you can build houses for them.


and furniture and stuff





Who gave me a down thumb :'(Hi im 9 years old and i want to know for what are the nails on runescape?? because i found some?
nails are pretty worthless if your not a member, just put them in your bank/inventory, or try and sell them to other players