Like what I have done in the past are there a view options to donate. In case you like to give something back in return for all the designs that I have made over the years.

so I can keep on making more things in the future. And who knows maybe it’s enough at a certain point that i can publish all the designs for free again. but for now was this not a sustainable model. 

if you have a other suggestion to donate, then you can let me know in the Contact Page.