Usually have a couple of Nuthatch and a Tree Creeper along with two Greater Spotted Woodpeckers and a bunch of Blue Tits to watch while waiting for the Squirrels, they provides welcome amusement. Last year a Hawk (too fast to identify) hit a Blue Tit near to the feeder so hard I didn't see the impact but heard it from among the cloud of feathers it created.Sometimes get the odd Jay visiting..
Love being out among the wildlife, it's more than a bonus.
My feeders are basically 4 or 5" diameter drainpipe with a domed base of 1/4" mesh which the birds can feed freely from but cannot take whole peanuts. They and the Squirrels (when they hopefully soon decide to feed in numbers) are kept occupied for a while when feeding at the station.