I ended up having to stop blogging about this project since some of them were secret gifts! But now they're all done and here's the round-up of all 12 pairs. With ravelry links if you want details!
Thrummed mittens
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Colorblock mittens #1
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Sailor's Rib fingerless gloves
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Mittens to order
Blue Selbu
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Colorblock mittens #2 (for The Girl)
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Baby niece mittens
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Yellow and grey Olines Vantar
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Blue and grey Olines Vantar
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Yellow and grey fingerless mitt
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Colorblock mittens #3
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Zigzag fingerless mitts
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What a fun project this was! I met my goal of 12 pairs, although I didn't knit everything on my dream list. I got a lot more practice in stranded colorwork and I'm feeling pretty confident there!
I also made up the patterns for several of these, a few of which I might write down nicely and put up for free on ravelry.
I'm not sure what's next for me, but I already miss having a mitten always going! They are such handy little projects (pun intended!).