We always support 'local' animal sancturies.One of them has big plastic tubs near the checkouts in our local Morrisons and you just donate tins of dog/catfood etc into the tubs.
A lady who use to work with Sue at Morrisons has set up a Springer spaniel rescue centre,she also has boarding kennels.We save/collect any old sheets and towels which she uses for bedding for the dogs.
When we visit she has chickens running everywhere and we always come away with a supply of jumbo sized freerange eggs.
If Sue had her way we would be coming away with a Springer