Mastodon's "Advanced Web Interface" lets you pin several hashtags in a single column:
1. Search for a tag
2. Click ⚙️
3. Click "Pin"
4. Click ⚙️ again
5. Toggle "Include additional tags for this column"
6. Enter multiple tags in any of the three boxes, depending on how you want them to affect what the column shows.
"Any" shows posts with any of its tags
"All" shows posts with all of its tags
"None" hides posts with any of its tags
More info: https://fedi.tips/how-to-activate-mastodons-tweetdeck-style-advanced-web-interface
@FediTips This is one of my favorite things in Mastodon. One column to keep an eye on multiple related hashtags? Sign me up!