Surfchamp was a game for the Commodore 64 and Spectrum 48K, released in 1987. It came with a plastic surfboard which turned your keyboard into a surf controller.
Unfortunately it didn't do very well, it's quite rare and even rarer to find with a surfboard. To make things worse they produced a budget release in small packaging that didn't even come with one, and the instructions didn't even tell you what keys to press without it.
I bought this budget release and spent then next thirty years or so wondering what it would be like to have the surfboard, and then I discovered Judge Drokk on Twitter and he gave me some images I could use to design and 3D print one.
And then later on I finally got one on ebay, and it turned out I was very close! So I've finally got around to releasing this so others can enjoy this game as it was meant to be played.
And then even later, @CrashOnlineUK on Twitter sent me the ZX Spectrum version which I never got all those years ago, so I recreated that one too!
You can find more about this game on Spectrum Computing:
https://spectrumcomputing.co.uk/entry/5078/ZX-Spectrum/SurfChamp
If you want the full visual experience, print out the included SVG on sticky paper at no bigger than 177mm x 59mm (otherwise it will be too big!), and then stick it on.
The author marked this model as their own original creation.