My least favorite Sinclair computer game was Ram Pack Roulette for the ZX81. If you jiggle the 16k Ram pack, do you crash the computer and get to reload your work?
The CSSCGC has run almost every year since 1996. I haven’t been able to take part this year, but the latest compo is always forwarded from https://csscgc.org
The world can always use more Cassette 50-like Game Jams - it's really productive to just create something, anything, without having to worry about whether it's good. Just make a game, it's liberating.
(Sidenote, as a Commodore 64-supremacist, I will point out that "Sinclair Crap Games" is unnecessary wordy, when just "Sinclair Games" would express the same meaning using one fewer word :P)
It came free with all ram pack purchases too!