Jules is a decent bet for thinking of stuff! He's fond of spy movies/novels. ...I am not, but here's what I have.
One thing with hashtags for two-part symbols is that you could use them as/claim they are tic-tac-toe grids and the second person just puts either a star as the X or an angular, vaguely skull-ish but undetailed circle for the O. ...and then wouldn't have to finish the game or anything.
Julien also wants a bunch of unrelated fake symbols that mean nothing and just serve as red herrings for anyone who might notice. Heh. Aaron could turn in one of the favors he's owed and have people put those up in sketchy areas. ...Julien can distribute some to his friends, too.
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One thing with hashtags for two-part symbols is that you could use them as/claim they are tic-tac-toe grids and the second person just puts either a star as the X or an angular, vaguely skull-ish but undetailed circle for the O. ...and then wouldn't have to finish the game or anything.
Julien also wants a bunch of unrelated fake symbols that mean nothing and just serve as red herrings for anyone who might notice. Heh. Aaron could turn in one of the favors he's owed and have people put those up in sketchy areas. ...Julien can distribute some to his friends, too.