As always, the big one and my favorite is the $5 off any print book purchase over $20 coupon (use the code GIFTBOOK17)! That partners really well with their deals on things like the D&D Player's Handbook (already on sale for $29.95/40% off).
Amazon Devices -- the Kindle, Echo, even the Dash Button -- are all on sale for some ludicrously cheap prices ($30 for a Dot, $50 for a Fire HD, $90 for a Kindle Paperwhite, etc)
In movies, the complete Harry Potter series on Blu-Ray is only $29.99 (70% off), That's barely more than $3 per film!
Wonder Woman on Blu-Ray/DVD/Digital combo pack is $9 (75% off)! And Guardians of the Galaxy 2 in the same multi-format pack is $9.96 (75% off!
Other good movie deals: Justice League: Throne of Atlantis is $3.99 off on Blu-Ray; American Sniper is $3.99 off on Blu-Ray; both The Polar Express and A Christmas Story are $7.99 on Blu-Ray; Trainwreck is $4.99 on Blu-Ray/DVD/Digital; Bridesmaids is $4.99 for Blu-Ray/DVD; and the underappreciated Mike and Dave Need Wedding Dates is $3.99 on Blu-Ray/DVD/Digital. There's a ton of other deals, as always
In board games, Ex Libris is $36.86 (39% off), and Exploding Kittens is $15.99 (20% off), both lower than any other deals on the games. Betrayal At the House On The Hill is $33.99 ($6 below other sellers), and remains one of my favorites. The expansion is also on sale for $17.99.
In video games, Persona 5 is $29.99 (40% off) if you get the digital version (the physical one was also on sale, but sold out)!
And in classic toys (for folks doing holiday shopping), the Melissa & Doug Deluxe Wooden Railway Train Set is $51.32 (61% off), and the Super Spirograph 75-piece Jumbo Kit is $24.89 (26% off), both way below other sellers.
And finally, as has become tradition, the Instant Pot is on sale for $81.99 (37% off). Yes, you do need one.