I've had a number of items I've wanted to save for future reference. I can't seem to find an option on the Furefox mobile site that allows me to do that.
Sure I can open in browser and bookmark, but I'd rather they all be under my account here.
If you have a Mastodon account as well, it has the bookmark feature, so in a pinch I can bookmark by boosting and then switching to my Masto account and bookmarking it there. You just need to follow your kbin account from your Masto account.