Others will have suggestions of their own, here's my tuppence worth. BTW, welcome to WAB Grant!
Hedgehogs like cat meat. Try to leave a little bit of garden untamed, ie, nettles for peacock butterflies. i believe greenfinches love black sunflower seeds too. Feathers will attract long tailed tits at this time of year as they're nest building.
Anyone want to add to the list?
Carl