How to Knit Hedgehog Mittens – DIY -> make a hedgehog and an otter one for each hand and you've got John and Sherlock! now to find an otter mitten pattern… <-the hedgehog would have to be for the right hand, because John is Sherlock's right hand man :)
My yarn recommendations are always the same - any fingering-weight yarn will do. If you need more details, please see my other patterns, where I list my favorite yarns. It’s just impossible to list them all anyway)).