If you want to give, volunteer, donate or buy, a handy site for finding charity shops is HERE
unfortunately it limits results to 24 responses per search.
Currently I give large objects to the YMCA and smaller things to Wirral Animal Sanctuary, though there are other charities I help out.
Parking at the Birkenhead YMCA shop's back door is easy (once you know where it is - up ramp HERE
) and a phonecall to 0151 647 1620 gets it open, or they also collect stuff.