In rec.aviation.piloting Al G wrote:
We don't have to ship the pod, just the [radar] receiver/transmitter
and display. The R/T is probably 12" x 12", and weighs about 15 lbs.

One place I worked had to ship PCs across the country on a regular
basis. These were the usual mid-tower PC cases, about 8" x 16" x 16"
(20 x 40 x 40 cm). What ended up working the best was a heavy wall
cardboard box that was about 3" (7.5 cm) larger than the PC all
around, or about 14" x 22" x 22" (35 x 55 x 55 cm). One of the 22" x
22" sides was the top. There was 3" of foam in the bottom and against
the sides of the box. (Think "stiff seat cushion foam", not "foam
coffee cup.") The PC was laid in the middle of the box and another 3"
piece of foam went over it, then the box was taped shut. Once they
started using this packaging, we stopped having to reassemble each PC
when it got to the recipient.

They were able to get the foam and boxes made to order due to their
volume, but there is no reason you couldn't duplicate this with
packing peanuts. If you do use packing peanuts, put each individual
item in a plastic bag first - this keeps the recipient from having to
clean packing peanuts and little tiny pieces of packing peanuts out
of every crevice. If you're going to wrap the item with bubble wrap,
you can forgo the plastic bag, *as long as you tape up the bubble wrap*
so peanuts can't migrate into it. For electronics, you really should
use anti-static bags (silver or pink) or bubble wrap (usually pink).

Matt Roberds