I would have to do some checking to find out for sure ,but believe ours just started small and grew from there.
I would suggest picking one particular group. Whether it would be like "fire victims", our group gives them out to families that have suffered a house fire and have nothing left.
OR like WAVI (Women Against Violence) they are given as people arrive as something to be their own, quite often they come with just what they have on.
OR the "Children's Home"- they do like theirs a particular size because they are easier for the children to make their own beds, but then again it is something they get to keep and call their own.
I am a True Believer In "One"(Even 1 helps)can make a difference....