Clean at last

Today I decided to thoroughly clean my living room. Our living room has turned in to the "kids den" basically because that is where we keep all their toys. I found things under the couches and under the entertainment center that I never even knew existed. Puzzle pieces, crayons, nickels, blocks, spiderman rings, popcorn as well as many more items. I managed to throw out 1 bag and 1 box full of broken, ripped, shredded, cracked, and destroyed toys and books today that my boys have managed to acquire in the course of less than a year. Now some of these things I purchased at thrift shops where I did not spend much more than 25 cents on, therefore, have no remorse over having to throw these items out, but how do you explain where that particular book or toy went that the child received just 2 months ago for their birthday that was purchased at an absurd 50$ (or more)?