These mittens started out as socks meant to match my recent sock project. I planned on making tube socks (no heels), but as I counted how far the stripes were taking me, I knew socks wouldn’t really work out. My second plan was to turn them into mittens.
I used this pattern for inspiration. It’s written for a different weight, but I used the basic format. Instead of using waste yarn for the thumb and closing it up later, I cast on 4 stitches and increased into each stitch with kf&b’s for two rows to increase to 16. Then I knit to the length I wanted and joined with the body before the gusset decreases. 
I did that yesterday with the orange thumb shown above. The yarn was a bit thicker and seemed too long, so I did this: 
then this: 
and some unraveling, 
and some picking up. 
Please excuse the poor pics. This was a lunch time operation. I’m happy with the result.
And Z can wear the mittens! I might need to make the thumb a smidge longer. She’s wearing a swimsuit and sandals in this pic…
Wow..really I like it..so sweeeettt.
Awesome…really I like it.
How clever!
These are SO CUTE!
Gorgeous colours!
Those are so cute! Perfect cheery colours for tiny hands.
A swimsuit and sandals and mittens – oh to be a kid again 🙂 These mittens are so much fun, and I love the stripy thumbs!
Love these! What kind of needles do you use?
Addi sock rockets size 0
Your mittens are great! I really enjoyed your photos documenting your modification.
How Cuuuuteeee :oo <33