One way to show that support is to pledge to the kickstarter. Sure you might not need the books. Or you don't really need the bonuses. But by backing the kickstarter, you're supporting Paul. And you can back the kickstarter without selecting a reward if you just want to give money and not deal with all the stuff.
If you liked what you read in Paul's recent monthlyish email about non-profits and how they can fund their overhead so easily in comparison to how he struggles to keep Permies.com afloat, this thread just adds to that concept.