You won't make one at home, but cloud chambers[^1] reveal individual alpha particle tracks.

There's one in the Musée des Arts et Métiers in Paris — blew my mind!

[^1]: https://en.wikipedia.org/wiki/Cloud_chamber

Edit: turns out people make these at home all the time. Sick!

You can easily make them at home (source, I did last weekend!).

- Dry ice (mine came from something shipped cold)

- Dark piece of metal (I used a 3D printer hot bed) on top of dry ice to get cold

- IPA vapour (I poured some on a shop towel)

- Some transparent container to house it all - I found a glass display cube on the side of the road, fish tanks or Tupperware also work.

- Torch or something to provide side lighting

Very cool to see evidence of the particles zooming around us, can highly recommend.

This can be done at home with a little effort. Less effort if you can get dry ice easily.

https://hackaday.com/2019/01/13/see-the-radioactive-world-wi...

Well, google for "DIY cloud chamber" did result in quite some entries. Apart from youtube channels, with the first entry a guide from CERN:

https://home.cern/news/news/experiments/how-make-your-own-cl...