Done, I already see stuff from most people on this list.

Just make a couple posts of whatever is on your mind per day. Reply to things that interest you. Don't forget to use hashtags. Follow people you like and post a comment saying 'I also like topic x, followed'. Using #grownostr will get your niche posts out to a bunch of people. I follow this tag, had to block a few users spamming it with crap I don't like, but have found a bunch of stuff I do like.

I joined about a year ago and did not interact or post much and my experience was poor. I got back on about a month ago trying to interact more and followed more people and hashtags. This made all the difference.