Yes, the minnowsupport bot allows you to upvote 1 post every 12 hours in the Discord channel. The minnowsupport (and banjo) votes by themselves are only about $0.45, but there is a trail of votes following them, so you'll end up with 40+ votes and usually $2+ in rewards. There's a link to the channel in the post above, check it out if you haven't yet!