I'm sure most people on here who have dabbled with the Arkham Horror LCG have thought about this, but coin protector capsules are a great way to bling out your game experience. Someone (genius) recommended them for the Chaos token bag in the LCG and I immediately bought in, having a few left over my mind jumped to the rune tokens. I think they are slightly smaller than the LCG tokens so there was a bit of play with the 26mm case, but once closed there was no rattling. The 25mm would probably be a perfect match, but would be difficult to remove, buy at your own risk.
They add just the right amount of heft to make it a more satisfying experience.