Somewhere on the interweb (probably Ravelry) I read something about fleece/wool for birds' nests. Yarn is not good, as it gets tangled round legs, but wool fibres seem like they should be suitable, as bits drop off sheep anyway about this time of year. And the purveyors of bird-related products sell small containers of fleece, so it must be a good idea.
It may be a bit late, as blackbirds have been gathering nest material for a while now, and the robins have been a pair for some time, but a handful of fluffed up fibre was easily popped into an old peanut feeder and hung on a tree in the garden with a couple of tufts sticking out.
And we have a customer!
Still on the marketing theme, my jar of 250 vitamin tablets, which has lasted for 250 days, was nearly empty, so I went to buy another. Huh?
The new jar is just under half full.