If they work (and probably if they don't) the guys that service the bins would be very grateful for them. When I have items like this (albeit your's sounds like a fiar load) I try to keep them in the back of the car. Two or three days of bin runs is normally enough to spot one of their recognisable white vans, and hand over the goods. Personally think these guys do a good job, it keeps them honest (as far as I can tell) and you can't beat it for eco (and socio) -logical recycling.
As for the actual tip - It has always been an absolute mystery to me where it is, and when it's open.
Also - if they work - there's the charity shop in the square of course.