Bubble wrap is great for light components, but alone isn't enough for heavy amps or speakers. Their corners will cut right through it and be destroyed the first time the package is drop-kicked. I've been the recipient of amps poorly packed in bubble wrap. Speakers too.
I have found that the solid foam insulation from home depot is great. it comes in various thickness (1" - 2") and also different densities (white vs pink). They sell it in panels 2ft x 8ft for anywhere from $5 to $12 depending on thickness and type. It also comes in 4ftx8ft size. It cuts to size very nicely.
If I use peanuts, I put them in a poly bag and seal it up with tape. It helps prevent shifting, and is also much friendlier to the receiver.
I have found that the solid foam insulation from home depot is great. it comes in various thickness (1" - 2") and also different densities (white vs pink). They sell it in panels 2ft x 8ft for anywhere from $5 to $12 depending on thickness and type. It also comes in 4ftx8ft size. It cuts to size very nicely.
If I use peanuts, I put them in a poly bag and seal it up with tape. It helps prevent shifting, and is also much friendlier to the receiver.