One thing we can do that is practically painless is look for NEW ways to help -

For instance - a lady that works as a bookkeeper at a motel has permission to take the bath towels that are old and donate them to a shelter.

a friend that works at a short-term nursing home collects up discarded plastic wash basins ( like a small dish washing pan) that every patient gets when they move in - but most people leave them behind. They can't be reused by humans, but they make good litter pans for a shelter.

These are just two ideas - keep using that PetTalk determination to find new ways to help!