these are really helpful, both for when baby is little and can't really hold onto things in his push chair, and for when he's bigger and there is huge entertainment value in throwing them out.
They hold practically anything in place and are the right length to stop it getting tangled up in the wheels when ejected. This saves getting toys dirty and the trauma of losing favourite comforters over the edge.
They are easy to use and transfer (e.g. from car seat to stroller bar) and to put on/ remove from the toys. Highly recommended.