So you can test your email variations (subject lines, CTAs, etc.) on real people with similar demographics that are not on your list.
Aggregate people who are willing to receive test emails from a wide variety of demographics. The marketer can select a group from these people based on demographics and psychographics and do an A/B or multi-variant test of his emails to this group.
There are many tools out there, and many things are always changing: markets, new tools, new or improved features of existing tools, etc. If you had a place you can always get the experts’ view on what they are currently using and think is best, it would help.
A website where we get the leaders in marketing to tell us what they are using currently for each purpose and why. You’ll be able to find the expert you either trust the most or has a similar situation to yours, and see what tools they use. We will keep each one updated, and you can even get an alert when things change.
Have a weekly online live lecture for members. Membership should be a low fee to have as many members as possible. Additional revenues from a commission from lecturers sales. Members can access replays and synopsized replays with just the main points (and the pitch.) This is less about the person and more about the actual help they provide each week.
No need to guess if you need to water it or if it needs some additives etc.
Have a small gadget that you can stick in your pot or garden near the plant. You program it with the kind of plant it is monitoring and using the built-in sensors it will continuously monitor the soil and show you on a tiny display what you need to do.
For fun and to develop your mind.
A book about the general techniques, methods and theories for solving different kinds of puzzles. Should be comprehensive, teach the underlying methods and how they work and not just give solutions to specific examples of puzzles.