Historical archivey stuff might be what I get into next.
Looking at posts of coins and reading their captions, historical Greek etc. and frescoes etc. on Tumblr. Following some museum blogs. Seems like the slow pleasure I like. Somewhat cognitively stimulating, nothing overwhelming. While listening to Edith Piaf. This must be my braniac phase kicking in. Who cares how you did in school, unless you were a mathematics Olympiad.