This is Magical Farmer Yui (Hatsune Miku) version made by cafetera.
This is an old model by cafetera and it’s an original creation of his.
If I’m not wrong from the description of his blog, he made this based on miku and made her a magical farmer girl.
Which is quite random but really cool chibi model isn’t it?
Making it is quite easy as it only takes about 2 piece of paper to print and just around 36 small parts.
By the way her name is Yui and I found a video of Magical Farmer Yui singing here ;