Surrana, Anthraxus, Will, Chris, and Liminal. These people were online on CYS and participating in Secret Santa when in the padlet SaneCobblersSon replied to a question I asked. These are just some ideas of who may have been him.
1. It could be none of these people, they may have just been on and SCS may have been on the padlet but not CYS.
2. It could be Surrana. This is a pretty loose string, but I'll pull because there's practically nothing else. Sane could be in there just to imply there's sane or something, but anyway gives off the impression of insane. Surrana, from the troll attack game seems to have a known madwoman persona or something like that so it may be a hint to SCS being her.
3. It could be Will. I doubt this merely because I have literally nothing that could suggest it's him. I dunno, it's weak links I have anyway.
4. It could be Chris. It was in Chris's column that SCS replied to me, although this is weakened by the fact that (I think) no question was asked in any of the other columns.
5. It could be Liminal. I may have something here. This does actually look like it could be made by Liminal, but many of the hats use thinner lines than I've seen him use so far but besides that it looks a lot like he made it.
Of course, this is all asuming that SCS isn't me but I'll say I'm not him/her and it's your decision if you want to believe me or not.
TL;DR: Just some guesses who a secret gifter might be and why.