Build a list of influencers in the skin-care beauty niche. You could scrape this data from TikTok or Instagram and sell to Beauty companies looking for outreach opportunities.

Create a database with a list of companies that provide a white label service. Choose a category. Could be products, web services etc.

A niche list of bespoke, unique packaging companies.

Build a list of contact details for recently engaged couples. You could collect this by building a lead gen survey and running Facebook adverts.

A database of very experts for YouTube specific content requirements. Think thumbnail experts, script writers, audience engagement etc.

Create a directory of businesses specialising in building environments in the metaverse.

There is already a great free directory for this, but you could put your own spin on it and go more specific. Get employee contact data for each company.

Build a list of grant writers that specialise in putting together successful grant applications for small-medium businesses.

Gather a list of business podcast hosts. Podcast host directories already exist but you could go super niche and focus on business podcasts. You can collect their social links, podcast website link, number of listeners/subscribers and if possible a contact email for the host. Who would pay for access? Companies who want exposure, they can reach out for sponsorship requests, advertising spots, sending free products or even look for guest speaking opportunities.

A directory of speakers with experience speaking at business conferences, collect their email and if possible the average cost to speak at events.