I am considering buying an old ball mouse as a novelty toy

I was looking through very old technology in my attic and decided to fire my old Windows XP desktop up. I just need a nostalgic boost, the machine, Windows XP, the PS/2 keyboard, but one thing is missing.....a PS/2 mouse, ideally one that has the little ball underneath. I grew up using wireless USB mice, but I had to use those ball mice a few times, especially a the computer lab when I was in Kindergarten and 1st grade. It got me yearning to experience the look and feel of using a mouse where you have to clean the ball. 

I was thinking of buying a PS/2 ball mouse as a novelty toy. I will probably only use it for my old XP machine. I have a bunch of USB and wireless mice at my house that I use for practical stuff. I know cleaning gunk of a mouse can be cumbersome, but I think it'll be worth the nostalgic novelty. I don't give a hoot if people judge me for buying an archaic piece of technology. It's fascinating and the balls make great toys.