I remember playing games like wolfenstein3D, supaplex, sokoban etc. on our family computer 486 which had as I remember around 100mhz processor. (120mhz in TURBO mode)
Yeah and I did created a few levels in wolfenstein, there was a simple editor.

From programming view I did code my first website only using html and inline css in early 2000s. However internet was a thing of a rich people back then (in my country), so my brother downloaded the whole website with docs and basics of html/css/js for me in collage. My first website was coded on 300mhz pentium2 (or 3?) with no internet connection, took me about a two months to complete and was total mess. But was graphically satisfying with nice gifs which took tens od seconds to download. Main container had 600px width and looked pretty good on my 800x600 resolution.
I still remember messing with BOM signature because of notepad could not save a file without BOM. Leaving all utf8 chars as mess after saving.

Good old times.