What lies within?

At first glance it may not seem like much
items no longer needed, cool to the touch.
Airplane glue from models that are now broke,
lighters to make the BBQ grill smoke.
Ah those sweet summers of yesteryears,
oh look! Some tissues for your tears!
Tape of all kinds for every sort of need
ribbons and bows for gifts under the tree,
tools from screwdrivers and hammers
to rulers and planners.
Mostly it's things too valuable to toss
but when it comes to their use, I'm at a loss
pens and markers, some dried up with no cap,
for the valuable letters you read in your lap.
Yes, the gang is all here
heros of all types, from yesteryears.