@Rob_T_Firefly @sh3llcmdr @thegibson
My first machine was a Sinclair ZX81 with 1K of RAM, plugged into an old 405 line B/W TV with a constant (and strangely pleasant) speaker hum.
I didn't type in (or hand code) anything too big into it, not because of the modest RAM, but because the membrane keyboard was a pain.
I got a 16K RAM pack for it, and a ZX printer. Had some fun and learning with it, then sold it (while I could still get a good price for it) and replaced it with an Acorn Electron.