Huge fish kettle (not for food use) (Witton le Wear DL15)

I have two of these huge aluminium fish kettles. 19” x 15” x 9” high plus handles.They’ve been used for fabric dyeing and eco printing, so no good to cook food in, and in any case they’re vintage, pitted aluminium. Potential use for garden pond or of course a fellow eco printer/dyer.