Solving everyday problems that shouldn't exist in the first place: That's the 3D printing way.
https://www.printables.com/model/794247-keurig-mini-no-splash-platform/files
The problem with the K-Mini is that it's too damn tall on the Z axis. The machine can only hold 10 ounces of water in the first place, maybe 11 or 12 if you stretch it above the max. fill line, so that's largest pour it can ever do. But for some reason the outlet nozzle is mega far away from the drip tray. 6", in fact.
So that means as your coffee dribbles into your mug that is, if it's relatively normal, between 3 and 3-1/2" tall, it splashes all over everything. The backboard on the machine, the outside of your mug, the countertop, the floor. Where do they expect anyone to find a 10 or 12 ounce coffee cup that's 6" tall? Do they think you'll drink the stuff out of a test tube?
So enter this. Print it, assemble it, stick it on the drip tray. This lifts your mug 33mm, and can be wound out to further lift it to about 55mm, which is plenty enough work with any mug in my house without finding the cats licking coffee off the floor later.
(And yes, I do use reusable filters with it and no, I don't need to be whined at about "food safe." Do you drink your coffee out of the drip tray? Of course you don't. Don't be stupid.)
This is awesome! I'm currently using a stack of coasters to achieve this.
I do not have a 3d printer: if I found a maker space in my community or something, would I just book some time and walk in with the printables file on a USB?
Yes, all you need are the three .stl files. However, those are not printable as-is. You will have to run them through the slicer software for whatever printers they have at your maker space. I'm sure someone there can walk you through it. These should be very easily printed parts, with no tricks required to get them to come out right. My local public library has some 3D printers for people to use, as of fairly recently. Something like that might be worth checking out as well.
There are also commercial 3D printing services available online that will print things for you for a fee.
Or... You could use this as an opportunity to get a 3D printer!