Has anyone successfully put their speakers in storage for an extended period of time?


We’re about to upgrade our speakers, and am thinking of placing our existing, very good speakers in storage for possible future use in a second home or to hand down to our kids when they’re ready.  I cannot think of a downside, with speakers as opposed to electronics.  Any thoughts?   
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I had some speakers in storage units for a few years.  No damage, they've been fine.  I had some other ones in my not super dry garage for a while.  They work fine but the screw heads rusted from the excessive humidity.
The rubber surround of the speakers will deteriorate  in a couple of decades. 

By then, there will no interest in them anyway.