Morning all

I need some advice regarding what you use to store things outside? I know this seams a dumb ass question but the reason I ask is that I need something that will work better than the 2 rotting sheds I have at the moment.

It will be used to store the usual garden crap, but also 5 leather seats out of my V class and some bikes and childrens car seats. If I replace both the shit sheds with another wooden one will it result in the mould attacking the seats? I have no electricity going to these so I guess that I cant keep the damp away all together.

Are the plastic things in Argos any good?

Any advice welcome
Dave