Protective packaging?

[Sabitech]

Hi there, wasnt too sure if i should post this in the CPU section or not.
I'm looking for places to buy like 5 or 10 cpu clamshell cases (like the plastic case you get with new CPUs) but everywhere seems really expensive for what is effectively just a piece of plastic.
Any ideas where i can get these from cheap?

 

[Sabitech]

well the plan is i just want to store them, i have a few 1150 and 1151 etc cpus i use for testing boards so think cardboard might be the easy method lined with anti-static bag?