In my view, these are the ESSENTIAL upgrades for an Amiga 500:
Essential Amiga 500 Upgrades
https://youtu.be/Y6QnPj43GC0
Essential Amiga 500 Upgrades
https://youtu.be/Y6QnPj43GC0
Comments
You could buy an ACA500 Plus and slot it into the side. That kills many birds with the one stone, including a drive selector, memory expansion, a wee speed boost, compact flash hard drive and the ability to run WHDLoad!