I printed this at 0.35mm, standing up.
I used nice clear+sparkle nail varnish to seal the base and keep the coffee out of it.
Obviously, nice with colour changes.

The challenge is to break the flat base off the raft without having some layers stripped off.
Measure your cup ID, and set parameters accordingly
STL's are
59mm for Sunbeam Cafe Series
53mm for Krups

This design is actually for a USB cable protector, but much more useful for this.