Wow, after hearing all the horror stories of damaged instruments in shipping, I would say bubble wrap or foam on the inside of the case and nothing should be loose enough to wiggle! Then do the same outside the case, so the case is cushioned on all sides, and can't shift around in the box! Tape it VERY securely so the pkg can't come apart after it is shipped! Mark it FRAGILE! In BIG letters then insure it! Do all that and it will arrive safely! Check it the minute it arrives and if there IS damage, take pictures and call the shipper immediately! You will be glad you insured it if that happens! Odds are though, if you cushioned it securely inside and out it should arrive fine!