There is a deal on Samsung Pay right now for $10 off a $20 Groupon purchase that is good through the end of the year.
"$10 off 1 eligible Local deal of $20 or more. Must be redeemed through Groupon app at checkout. Limit 1 per person. Ends 12/31/2017 but limited quantities available. Cannot be combined with other offers or promotions. Exclusions apply."
The promo code is SAMSUNG10. But I'm pretty sure you have to click through the Samsung Pay app in order for the code to work.
Good for last minute Christmas presents. I find groupons are really cool white elephant gift ideas worth fighting over.