Have you seen the latest "must have" Christmas gift? Mermaid Blankets have been so popular in 2016 and you can easily create one yourself. We made our baby one from a pattern on Ravelry created by user Jersey Ali. The pattern is available as a free download from her page
It's a simple pattern to follow using treble and shell stitch and as it's for a baby, quick to stitch up. We did make some changes however.... we extended the fins to make them appear more elegant and extended the length as it was just too short for any babies we knew!
Ours was created using aran wool by Habico ( available instore) and used approximately 100 grams of wool. For an older baby or child just extend the length and add a few extra stitches to make it wider.