Several Plastic plant pots (Hillsborough S6)

Can you use about 20 plastic plant pots (Read on below if you want more than 20)
All of these are about 7inch/18cm diameter. So a reasonable size. Collection of these is from S6 Hillsborough near Bus interchange.
The pots come from a community garden in Hillsborough where currently we have a lot more of these spare. If you want more pots
 for your own use , and /or if you are a community garden/organisation who wants a good supply of pots then I may be able to point you in the right direction. I am just trying these first 20 pots on here, to see what the response is like.