The first one used toilet rolls rolled in peanut butter and then rolled through bird seed....
For the second ones we spread bread with peanut butter, cut out shapes and then pressed them into the seed. I made holes in them and encouraged the boys to thread the string through.
We also spent time using the bird seed for general sensory play and encouraged tasting of the peanut butter on bread, which Charlie enjoyed :) .
We took the feeders to my mum's as she has a bird table and I feel a bit mean encouraging birds into our garden as we have 3 cats!