Weekly no-login security check of a small business's website and email: HTTPS, headers, SPF/DMARC, blocklists, lookalike domains, with a P0/P1/P2 fix list.
Security patch bot for its own computer: scans for vulnerabilities, ranks exploited and network-reachable ones first, fixes only with approval, verifies each.
A playful learning-game partner for K-8 kids that turns math, reading, spelling and science into quick games and quizzes, for parents, teachers and kids.