Labor day 2017 was when I "came back" to Bitcoin. I had the Coinbase price ticker on my home screen and noticed that the price had just dropped and used it as an opportunity to talk to everybody around me at my Grandpa's party about Bitcoin and how I wasn't worried about whatever price it was at now because one day I would look back and laugh at how cheap it was.
To commemorate that point, I created a separate Coinbase account (back when you could create sub accounts) and moved $1 into it. (roughly 2400 sats)
That was when I decided that I really wasn't giving Bitcoin the attention it deserved and decided to start reading /r/bitcoin more and really pay attention to what was going on.
The rest is history.