In article ,
"ARWadsworth" writes:

You could fill the spare with Helium :-)

It would go flat very quickly - damn small those molecules, and
they leak out of just about everything!

A friend had this idea of taking a parcel into the post office to
be weighed for postage, but having it filled with helium, so when
the lady says please put it on the scales, it floats up to the
ceiling.

I then considered the idea of making bubble-wrap filled with
helium to make lighter parcels.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]