For me it comes very easy to let things go so I don't have much trouble. Each of my kids have a keep storage bag that has things I want to keep (clothes, a pair of shoes, toys). Every 3 months I go through their toys. If I have not seen them play with something in that time we decide if we (the girls are alwas there when I do it) give it to vinnies or we pack it away for the next three months. If I do pack it away and bring it back out for the next 3 month cycle and it still sees no play time it goes. Majority of the time though it sees some action.