Super cute idea for a playroom! DIY magnet board - 1 sheet of galvanized metal (comes in a lot of different sizes in the plumbing section) wall trim or frame. Cover in fabric. Could use felt so it can be a magnet board or felt board
Use milk bottles for pencil storage Recycle plastic milk bottles in to pencil holders. Grab a craft knife and recycle your large plastic milk bottles in to pencil holders. Extra points if you go all OCD and file them by colour.
Backyard Chalkboard - paint and mount an outdoor chalkboard on a boundary fence for a great activity for children. Less mess + the rain washes it away! Add some simple wooden shapes in a bucket so kids can trace around them & create masterpieces.