I designed a thermometer holder with magnets for my p1s. No screws are needed, just 20 magnets (4x2mm).
I recommend to print the inner side with petg or abs because of the temperatures inside the printer, the outside i printed with PLA.
For assembling you need this magnets and thermometer (or similar)
https://amzn.to/47540op (affiliate link)
https://amzn.to/3vfr06N (affiliate link)
If you have questions, ask them in the comments. Please tell me if you notice things which i should optimize.
Happy printing!
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