Hot Water Bottles (Beaumaris LL58)

7 hot water bottles. All in working order with lids. Accumulated in the garage cupboard, and have dust and washing powder on them, so the outsides need a wash but the insides are fine. Could be used for humans, or maybe someone needs to keep animals warm by placing them under their mattress cover? I thought maybe a rescue or similar? Or get them and share them with friends.