Cold frames?
 

I've had two cold frames lying around for years, but they have not often
been used, what use can I put them to on the veg patch?

Is it possible to set them up and use then perhaps to start seedlings and
then allow other veg to grow in them?

Perhaps rather silly questions, but the mind is not working as well as it
used to, if it ever did work, that is!(:-)

Alan