I was on eBay while drinking wine and ended up buying 100 magnets so decided to make some fridge magnets.

For this Thing I have used the 3D Mouse design by DDStarkey https://www.thingiverse.com/thing:61909 and added a hole to fit a 5mm x 10mm x 20mm magnet which I then stuck in with my usual all purpose glue.

I purchased the magnets from the link below from a Chineese eBay seller I have been buying electronics components from for projects for years. I'm not sponsored by them or anything like that, but I have never been let down by them and if you are happy to wait 3-4 week or so for delivery to the UK then I am happy to recommend them for your projects.

https://www.ebay.co.uk/itm/5PCS-10PCS-Super-Strong-Block-Round-Rare-Earth-Neodymium-Magnets-N50-N52-NEW/142847087381?ssPageName=STRK%3AMEBIDX%3AIT&var=441845306085&_trksid=p2057872.m2749.l2649