boxed.com used to have amex offers 3x, 15 off 75 20 off 100 etc but sadly no more. Also free shipping used to be at 50 bucks. i bought diapers, wipes, toilet paper etc instead of at costco. unfortunately once covid hit, paper products never in stock, prices seem to have gone up and no deals/offers anymore. I don't have any grubhub etc options unless I am traveling, but I have redeemed the credit every month otherwise via boxed.

correction - I have an offer on amex marriot business and personal hilton - 20 percent back on 150