Hi Gary,
The second batch look much better than the first. Are they only $1.00???
They could be used by WW2 modellers as part of a started poured wall/defence in the in NWE. If you look at the AA site under forfifications the basic structure looks similar, although yours are obviously shorter.
Now there's a though if you already got the process started
They look ideal for the Modern stuff. Hope sales pick up, Andy's idea would seem sound.
Could you also send an example to some of the Military Modelling Magazines with detaisls and see if they might do an aricle on them, just introduce yourself and your product. If you could get a bit of free advertising that would help you a lot.
Some thoughts anyway.
Cheers
Al