Sounds like you give a very permissive way to use your designs, so maybe the MIT license (e.g. used for Rails, see. https://github.com/rails/rails/blob/master/M

Sounds like you give a very permissive way to use your designs, so maybe the MIT license (e.g. used for Rails, see. https://github.com/rails/rails/blob/master/MIT-LICENSE https://github.com/rails/rails/blob/master/MIT-LICENSE). But that requires a license and copyright notice, which you do not seem to require. So I am not sure. Maybe someone else can chime in? :-)