Do you still have your very first computer? If so please post some images of the machine.
Here is my old IBM p70 386 Portable (Luggable). 1988 vintage. The OS is MSDOS 6.0 and Windows 3.1 It still operates perfectly (but who in the world still wants it to?).
The display is a red neon gas-plasma type. It was one of the few modern computers to actually contain a vacuum tube display.
It cost a fortune whenever I purchased it and currently is worth more (as a collectible) than a new desktop.
Here is another old piece of junk that I really like.
A Microsoft Trackball Explorer. They are no longer made but they are excellent and have become quite expensive whenever you find them. I have two of them (one for my old age).
The mouse is stationary and the pointer moves about the display by rotation of the ball. There are four buttons and also a scroll knob.