Make Your Own Coasters

I need some new coasters, and I'd like to make my own, so I'm on a coaster how-to hunt. Here's a DIY set of coasters that looks like fun (the photos are the instructions, so it looks simple enough).

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Or how about these pretty stitched coasters?

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Here are some pretty ones that appear to be painted on cork (I've seen some nice ones painted on tile, but those are heavier than what I'm looking for):

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You can buy plain Zentangle coasters on Amazon (and elsewhere), draw or paint your own designs, and (if you like) cover them with something like Mod Podge to protect them (I'll bet you could even use heavy white paper backed by cork or reused cardboard). 

Buy at Amazon

And if you're interested in other ideas, here's a list of 30 DIY coasters (note: I haven't checked all the links): 

Even if you don't need coasters yourself, they might make nice stocking stuffers. It's already mid-August. Christmas is coming!