For twenty-five years I have thought that an enterprising individual with access to noodle-making technology could make money selling Alphanumeric Soup at computer conventions. The slogan writes itself: "full ASCII character set". If any of my readers actually try this, I want a 10% cut of the gross.

There's at least one hypothetical pasta shape that would sell even better than Alphanumeric Soup to nerds, geeks, dweebs, and poindexters: a tiny Möbius strip. The 'casereccia' at [this] link looks close, but not quite right, and the same machine could no doubt make both. Whether tiny Klein bottles could be made of pasta I do not know: it might be difficult, but the inside-that's-really-an-outside would help soak up the sauce.