Funny you mention gaming was talking to nostr:npub1de6l09erjl9r990q7n9ql0rwh8x8n059ht7a267n0q3qe28wua8q20q0sd about that yesterday. The gaming community is small but growing and their is some room for dedicated posters relating to just games or different niches of games. Could even get a few #nostr based guilds/clans going.

For the rest of the stuff checkout the foodstr, travel and dogstr hashtags those are posted in regularly. Plenty of interesting and actively posted stuff if you use the right hashtags. Nostr isn't barren like some outsiders like to claim, it's pretty vibrant and the posting is high quality.