In the end though what I really wanted to do was knit a pair with cables. I was sure I had a pattern that would fit somewhere but was too lazy to hunt it out. So I adapted the Purl Bee pattern to fit with what I wanted. As it's an adaptation of a pattern already free I am posting my version of it. Feel free to use it (or to let me know if there are any mistakes). What I do recommend is that you maybe use a double knit rather than sock yarn. These will fit my sister (and my mum who modelled them) as they have small hands. If I was knitting them for a friend or for myself I would definitely use DK for comfort.
Needle size - 3mm
Cast on 60 stitches and divide evenly over three needles. Use a stitch marker to mark the start of the row if required. Work in rounds.
Row 1 - Knit 4, purl 2. Repeat until end.
Repeat until five round have been completed.
Row 6 - Place two stitches on to a cable needle and bring forward. Knit the next two stitches on the DPN, knit the two stitches on the cable needle, purl 2. Repeat until the end of round.
Row 7 - Knit 4, purl 2. Repeat until end.
Repeat until 10 rounds in total have been completed. These ten rounds will form the pattern.
Repeat last 10 rounds until you have done a total of 8 sets of the pattern.
Next row - turn, knit 2, purl four. Repeat until end of the row.
Next row - turn knit 4, purl two. Repeat until end of the row.
Repeat until five rows have been completed in total.
Next row - Turn, Same as Row 6.
Next Row - turn, knit 2 purl four. Repeat until end of row.
Repeat until full set of pattern is completed (10 rows in total
Next round - Do not turn, instead rejoin round (this will have given you the thumb hole). knit 4, purl 2. Repeat until the end.
Continue until a further two sets of the pattern have been completed.
In total the pattern will have been produced 11 times.
Repeat again for the second mitt.
Edit - The yarn I used was 100g and I still have quite a lot left. You could definitely get another pair out of it.