I want to encourage them to make more,

Glad I'm not the only one doing this.  I also email them and let them know how much I enjoy the product and thank them for their work.  I'm surprised at how often I'll receive a return message thanking me for the kind comments and sometimes expressing disappointment at how few people take the time to give them feedback.  Customers should be taking a little time to bolster the egos of their favourite content creators.