Thomann Universal Mic Case

With a sturdy outer shell to protect your microphones in transit it's a great cheap alternative to an expensive flight case. The inner foam section provides sections for 5 microphones plus some accessories. Obviously since it's not a custom case the microphones don't fit snugly into nice pre-cut shapes but it will do the job of protecting the microphones so long as you don't sling it around like some airport baggage handler.

A great case for my use. It's not exactly built for heavy-duty applications, but I use it to store receivers for simultaneous interpretation.