Dear, it sounds like you were starting a sampler quilt, which means you get to choose whatever you like for the other 10 blocks. Go for it!
If you put sashing between them, ANY blocks will do. It will be simpler if you make them all the same size, but even that is not obligatory; just use "coping strips" to even them out. Be creative. If you don't want to use sashing, then consider picking "cousins" of the two blocks you have. They both can be broken down into 4 by 4 patches, and there are a heap of similar blocks to choose from.
Main thing: have fun!
I did find a shop called Quilts Olé in New Mexico. Were they the ones who got you started?
http://www.quiltsole.com/
Pictures from Quilter's Cache
http://www.quilterscache.com/QuiltBlocksGalore12.html
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