There’s some new offers from PPDG on eBay’s Discounted Gift Cards section besides a few older offers that are still up. You can get Overstock gift cards at 20% off, Airbnb at 15% off etc. These went very fast last time, so jump on it if you’re untested.
Gift cards sold from PPDG can earn you an extra 5x back in UR points when you use your Chase Ink Plus card.
Also try a cash back portal. Ibotta has tracked my gift card purchases with 2% cash back on eBay, and Mr.Rebates is offering 1% back and has also tracked for me recently. It still doesn’t guarantee a payout, but it’s possible.
Keep in mind that Ebay Bucks can no longer be earned on any Gift Card purchases.