Before we start: I am 50% sure these have probably been discovered. I just happened to come across them, and I never see anyone using them, so hey, maybe they haven't been found. Kindly do not hate on me, because will be someone who got there first. There is also a TL;DR at the botom.
I was running through the final steps of the Taken King questline on my hunter, I hadn't completed the main questline yet because my hunter was mainly for PvP (I'm not a salty hunter, I'm a warlock main.) and why bother with PvE? I just decided to do it anyway, because why not. So I invited a friend to the party, and we started.
We were about to do Oryx, the mission version, when we had a joke that Oryx 'only wanted to play baseball with the guardians and that battleaxe was just a hive baseball bat'. So I decided to go back to the tower and pick up the 'SAFE!' emote, while my partner got the 'Swing' emote.
I got there, ran to the emote section, went to the second page to find the safe emote, when I spotted two, new emotes at the very end of the page. I didn't remember getting these, and they were rare quality. I went over them, and they are 'Nope.' and 'Yes' emotes. They both do the shaking or nodding of the head.
I don't remember buying them, they must be free, along with 'Point', so go grab them, guardians!
TL;DR: There are 2 more free emotes in the emote kiosk in the tower bar, 'nope' and 'yes'. They both look sweet, worth getting. No money required.