Its a good time of year to ask this question as its the fair and show time of year, at least round here. Check the local papers for local good cause events and contact them, I am sure they will welcome your donation with open arms. When I had the same problem after DH died (he loved red wine, it gives me a thundering headache) I gave half to my local vets for their charitable funds, and half to the local horticultural society for their raffle and tombola. Like you I had no idea what was what so the winners will likely have got some surprises!