I made this lid specifically for the skyr we buy at the Lidl. The cups don't come with their own lid, so I designed one. The lid snaps on and off easily. I printed mine in PETG HF and they stay in perfect shape after dishwashing. PLA works as well but tends to warp in dishwasher so they would need to be hand washed. 

Print with a 0.6mm nozzle in spiral vase mode with an outer wall thickness of 0.9mm.

The skyr cups have a small lip which the lid snaps on to. The lip has a diameter of 94.5mm. You should be able to scale the X and Y to fit your own needs.

The print profile also contains a larger size lid which I made to a different product with the same problem. I believe that one is for a diameter of 115mm.

You can also support my work on Ko-fi! 
Or, if you're interested in selling physical prints of my designs, check out my commercial license options there.