If you store items on the basic bookshelf you are required to spend 1 oinc to take it off.
Steps to Reproduce
Build a basic bookshelf from the "renovate" tab while inside your house, then place an item on it. You will be asked to spend 1 oinc to take it off the shelf.
Build a basic bookshelf from the "renovate" tab while inside your house, then place an item on it. You will be asked to spend 1 oinc to take it off the shelf.