Nancy Young > had some very interesting
things to say about Storage for Tupperware lids:

>> Why not just store the lids on the appropriate container?
>a) Then they wouldn't stack and would take up much more room

I like to nest containers [I have a lot of a different brand] with
lids on their containers. For my storage space, this works. As for
dampness, I don't put things away until they're dry in the first
place.
--
"The universe is quite robust in design and appears to be
doing just fine on its own, incompetent support staff notwithstanding.
:-)" - the Dennis formerly known as (evil), MCFL