Although they differ from Twitter Likes, note that Mastodon Favorites are not private. For an example, I'll refer to one of your toots:
https://mastodon.social/@justhach/110696151311920356
Viewing it in the Mastodon web interface, I see an indication that 2 people marked it as a Favorite. I can then click to see those 2 usernames, listed here:
https://mastodon.social/@justhach/110696151311920356/favourites
Such listings are limited though. For example, I'm viewing a toot that you boosted, and I see an indication that it has been marked as a Favorite by 816 users; but when I click to view their names, I see only 40 of them listed.
I buy some of that stuff locally from a well-known & supposedly-"eco-friendly" brand. Just now I checked their website to see if they sell direct-to-consumer. Some do but this brand doesn't. So I took a look at their "Where to buy" list. Most of the listed online sellers were the obvious big-box or affiliated. But there was one apparently independent and environmentally-focused alternative retailer listed, with reasonable retail and shipping prices. I'm reading up now (Wikipedia and reviews) to decide whether that retailer will interest me or not.
So, my suggestion is to visit the websites of some brands that you like. Perhaps some may sell direct; and if not, check their "Where to buy" listings to see if any interesting options might be found there.