WIP: Endpaper mitts / secret santa riddle

I clearly have a crafty and inventive secret santa - I got home yesterday to find this in my mailbox...


Do you know the answer?

So I've been working on my endpaper mitts, which I started over a year ago. Yikes. Finished one, though, and the second one is coming right along.


They're very pretty and fit so nicely, perfect for going up a coat sleeve.


Tomorrow I'm getting on a train and there will be lots of knitting time.