In Scotland certain Charity (thrift) shops receive "goods in kind" which are left overs or less popular items from High Street shops. The cost is well below shop price but a little more than privatly donated goods.These items are good quality always unworn and may be one season out of fashion.But when we buy clothing it lasts well past one season..Childrens clothing in particular is donated like this.It certainly makes sense for a young family to look first in these thrift shops.
Many times when a clothing company folds (sadly in the present economy quite often)these thrift shops have large donations.
Many shops also advertise for donations of unwanted Christmas gifts and people respond very well.
I am always saddened when I see that a house clearance has meant that the personal treasures are for sale..obviously well loved items...sometimes even framed photographs which are bought for the frame only...but then I realise that at least items are recycled and not used in landfill.Puts into perspective what is important..
I do donate what is unused rather than clutter my home..