Or maybe emoji? I made a reference task with this set I picked out for some general usage so they’re around for reuse/reminder (not all translate here to the Community’s editor, and the last row may not work in Asana in all platforms/browsers I think:
↔ 
*⃣ #⃣ 0⃣ 1⃣ 2⃣ 3⃣ 4⃣ 5⃣ 6⃣ 7⃣ 8⃣ 9⃣ 
Re remembering to look at them, if they’re assigned to you then you can used the Marked For categories, and Sections within those, e.g., within Today you could add a Section called “N. B.:”
Larry