In terms of design, I find Lemmy to be basically a 1:1 replacement for Reddit. It's a link aggregator with communities, comments, and voting.
I like it a lot, even though the communities are smaller and there's less content. It's just a nicer communal experience for me compared to Reddit. I feel more pressure to actually comment since the communities are smaller and every little bit helps, lol.
I found almond milk to be a great substitute a couple of years ago when I was dieting. Particularly the 'unsweetened, vanilla' variety from Almond Breeze.
As an added bonus, it also has a much longer shelf life than regular milk.