Time to declutter?

This built in cabinet was made in November. I was able to dispose some of the kids' stuff in time for the N@W party. But during Rafa's birthday, Christmas and even Gabbie's 5th, they got another load full of toys, books, and other things they don't necessarily use.

So I' thinking of de-cluttering again, to make space for the art activities that I'm planning to do with Gabbie in summer.