Most private based sites don't allow public nudity, or have other restrictions on what can be done in public chat.
Tip to vibe shows are very popular and profitable.
If the minimum payout is not met, the earnings will roll over until the next payout.
Producing and selling adult content is great, as it creates a residual income of sorts.
There's also suggestion equipment such as and outfits.
Fetish is a very broad term that encompasses a lot of potential types of shows and clips.