"Norminn" wrote in message
...
I'm working on a project, using "something" plastic for a float on salt
water. Am contemplating using one of the low, rectangular plastic storage
containers if I can cement it closed to make it water-tight. Don't know
what kind of plastic they are typically made of - polystyrene,
polypropylene? Hubby and I like to engineer small, inconsequential
projects ) Trying to rig a small, floating platform to store kayak out
of the water. Any helpful suggestions appreciated. Since it's almost
Christmas, you're welcome to make fun, as well )

I was just helping a friend install a printer that was a replacement unit.
The packing technique might work for you.

Instead of foam inserts, the packing material was simply good size plastic
bags full of those foamed peanuts. The bags were packed just loosely enough
to allow them to be fitted to the printer and having the peanuts bagged kept
them from the usual mess.

See what kind of very strong bags you can find. As they say "whatever floats
your boat".

Charlie