If you want to use them as coasters, print in PETG, PLA might melt. Print at 0.2mm layerhight or less, in PLA or PETG. Examples below printed on the Prusa Mini + at 0.2 mm in PETG and PLA. Add a color change in Prusa slicer at 3.2 mm.
You can also put them on your garden gate or somewhere in your garden :-). Add your custom text.
Enjoy
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