Reward Saver
If you deposit say over $10 regularly like once a month and do not make any withdrawals, through a Reward Saver you get a bonus amount of interest. Typically, interest rates for Reward Savers are slightly higher than online savers. Note, if you withdraw money from this account, you do not earn interest for that period (e.g. that month).
I use these accounts for my kids, depositing a small amount each week.