Where I live I get different charities putting large plastic bags through my letter box asking for donations of household items/clothes etc. It's always been a pleasure to search through all the kids clothes and mine and I always find a way to fill the bag! I'm so grateful for the bags!
Great for all parties involved :-)
If I or the kids haven't worn an item for 1 year, it's clutter, so it goes, even if it's in new condition. (I do reserve a couple of items for weddings etc. because they are not always annual events).
Our motto here is that we aren't allowed something new unless we get rid of something old, that way the energy keeps flowing.