Are links to Patreon or Paypal tip jar acceptable?

I know there is no ‘tip designer’ options here but since that isn’t available is it ok to provide links to a Patreon and/or a Paypal tip link? I plan on making a lot of figurines and items that people can download to print on their own printer machines and also offering them over on Shapeways but would like to make a little earnings if people like my stuff but still be able to offer them mostly for free. Encouragement tips you know? lol. Just wondering for plans on how to offer future stuff.