Mine was Doge from earlier this year. When everyone was memeing about Doge a few years back, I acquired some for a few dollars and they sat in a wallet gathering dust. I was taken by complete surprise when it pumped in March. It's the only coin that has done well for me. Most of the other stuff I bought turned out to be duds and I lost money on them.
RE: What was the happiest moment in your crypto journey ?