I have some toothbrush heads that are non-returnable cos I opened the packet before realizing they totally don't fit my elec toothbrush (excuse - it was a new toothbrush and I wasn't sure what sort of replacement heads it took). Far too good to chuck, not sure about freecycling them. There's also a camera strap and a couple of other things on the to-get-rid-of pile; I often have one of those.