SPP gives out $10 Tim Hortons gift cards. haha I know, just $10 right, but the thing is the minimum balance to open an account is $0.01, so theoretically, you can get a 1000 times your contribution in a gift card.
I got the TD RSP deal, so did my wife. If you're not interested in those deals, there's tons of different deals on SparxTrading's website, they usually post all the current brokerage deals each month. Here's their current month deal: https://www.sparxtrading.com/current-de ... uary-2019/