WANTED- Cheap or Free Garden Shed ?

Looking for a cheap or free garden shed :) Unfortunately i cannot afford to buy myself a new one, but due to my push bike now been stolen for the 3rd time, a shed that i can lock is what i am needing for me and the kids bikes. I can arrange pick up and also dismantling of the shed if needed, and would like to thank anyone in advance for their kindness if you can help. Many Thanks.