Put some slatted shelving in a cupboard for bedding / towel storage
Bought a sheet of MDF from B&Q
Use the free cutting service to get the board cut into 100mm strips the width of the cupboard and then the offcut into strips the depth of the shelves
Before
Prepped and drilled the battens and toggle bolts to use on the plasterboard walls
Placed and screwed the strips to the shorter strips running front/ back with the strips running the width just resting on the battens
With a bit of twisting and fettling they can be removed in one piece
Then the second one
Not bad for £35 of materials and a few hours work