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I've seen people make Dogma autistic, and a stress baker, that bakes before major campaigns/battles, then I'm pretty sure he would also be stress knitter on top of that.
Since he could be unraveling and reusing the same yarn over an over again, rather than needing to get more material, for baking, constantly.
I like to imagine Tup just has an ever changing scarf with different patterns or type of stitch.
And because I'm feeling cruel apparently, after Umbara Tup would be left with a half finished scarf that he would try to finish, only to make that end too tight(lumpy), too loose(weird stretched out rows), dropped a stitch(a hole that may unravel the scarf if not fixed), added a stitch(that/those row(s) are going to be noticably wider then then previous rows), or all of the above.