In my quest to find a good case for my pencil mics, I stumbled across these two cases. They have nice firm foam inserts for top and bottom, that will keep things nice and snug. Keep in mind that they're only good for 20 - 25mm pencil mics.
I plan on filling the humidity compartment with silica-gel, to ensure my mics stay nice and dry.
5 Mic Waterproof Case
http://www.amazon.com/Otter-Box-5-cigar-Caddy-3400/dp/B0007VWETM
2 Mic Waterproof Case
http://www.amazon.com/2-cigar-Caddy-3140-OTTER-BOX/dp/B0007VU67O/ref=pd_sim_k_2/104-3015741-4011953

I plan on filling the humidity compartment with silica-gel, to ensure my mics stay nice and dry.
5 Mic Waterproof Case
http://www.amazon.com/Otter-Box-5-cigar-Caddy-3400/dp/B0007VWETM
2 Mic Waterproof Case
http://www.amazon.com/2-cigar-Caddy-3140-OTTER-BOX/dp/B0007VU67O/ref=pd_sim_k_2/104-3015741-4011953