What do I do when my board is full and so is my storage and I have no diamonds to buy more slots?

We already have an answer for a similar question which you can see here:
If my board and inventory is full how do I clear it to make moves?

If you have more answers to add you can do that below.

You have to sell items you don't need to earn smiles and make space

You can cheat.. when your board is full you can sell an item near Ice cream cabinet . Then it automatically gives an ice-cream . You can undo the sell but there is no empty space for the item to go to... so it goes to the inbox. (By inbox I mean the space where all the gifts and updated stuff show up )

The only problem is that if you put too many items you have to choose them all one by one in order to find the one you stored and need.