Lottery wheels
A wheel turns a shortlist of numbers into the set of tickets that covers them. It doesn't improve your expected return — nothing does — it changes the shape of the outcome: more small wins and fewer total blanks, for more money staked. See responsible gambling.
Shortlist more than 6 numbers from Bank a Million's pool of 1–40, then pick a wheel. Tickets hold 6 numbers each.
0 chosen
Choose at least 7 numbers.
A wheel guarantees coverage of your numbers, not that your numbers will be drawn. Every combination remains equally likely, and buying more tickets increases both what you can win and what you will spend.