I've been looking for something like this but I only found one commercially available. I have used
3D printing services before to make small parts.
Is there any interest in me designing and posting a tool like that to an easy service like Shapeways?
If you have a printer at home, you could just make it yourself, I don't have one myself but I use print
services for the rare item I want.
If so, I'd be very happy to hear any input on the features or functionality. I think it might be possible to design the tool such that it comes with inserts to allow different size capsules.
Todd