These ideas are ways to start thinking about business awareness. You’re unlikely to use these as evidence of business skills in a written application, but they might be things you reference to demonstrate an ongoing interest.
Do a Micro-internship. or undertake a 'virtual internship', e.g. through Forage, which offers free, short (6-8 hours) open-access courses set by leading companies and which challenge you to work through in-depth case studies that reflect that company's industry and work.
If you're volunteering or in part-time work, suggest ways to improve efficiency, resulting in time or cost savings.
Sign up for the Enterprising Oxford newsletter, and engage in their events across the University.
Sell a skill, for example, by organising some paid gigs for your band or to raise money for a favourite charity.
Commit to self-directed learning for example in marketing, finance, or business management with the Government's Skills Toolkit or LinkedIN Learning (free using your SSO via Molly, IT Services learning portal)