Found a neat little plastic box at "The Container Store" for 99 cents. Fits the UBlox LEA 6H in width and height perfectly. May need to stuff a foam spacer on the length wise side. Just tried it in the backyard and the GPS got a fix in about 30 seconds - the plastic cover is not adversely affecting the reception.
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I used a Tick Tack box that I cut down
That looked a lot like a CompactFlash card case so I checked to see if it would work and unfortunately, it doesn't. Looks like I may need to go find a store to do something similar.