Tools of Titans is $11.21 right now, down from Amazon's list price of $32.50. That's 66% off, a $21.29 savings. It's the lowest price in the last 90 days. Our reviewer called out the book's "17 great questions that can change your life," the set Tim Ferriss asks himself regularly to get more out of his work and personal life. The questions work as probes for self-reflection. The Amazon listing says it includes the author's signature.

Interior Trim Removal Tool Kit is $7.49 right now, down from $8.97, which is 16% off. That's the lowest price since July. Donald Bell recommended it in Cool Tools back in 2019 as the best kit for pulling interior car panels. The pry tools are flexible nylon, so they won't scratch dashboards, door panels, or plastic trim. They bend enough to get into tight angles and edges. The set also includes shapes for popping out rivets, fasteners, and car clips, so you don't have to pry metal against metal. It's light enough to keep in a glove box or toolbox.

The Titanium Quick-Release Keychain is $16.99 right now, down from $21.77, which is 22% off. It usually runs around $21.77 on Amazon. It lets you pull your keys off a ring fast, with a ball-bearing collar that keeps it from coming apart by accident. It's titanium and weighs 0.43 ounces, and Amazon says it holds at least 20 pounds. The ring swivels, so your keys don't tangle. It comes with two 1-inch and two 0.6-inch stainless steel rings, though they won't fit a standard key fob.

E6000 Craft Adhesive is $8.80 now, down from $9.99, which is 12% off. It usually runs $9.85 to $11.99 on Amazon. It bonds glass, wood, plastic, metal, ceramic, rubber, vinyl, leather and fabric. It dries clear, can be painted, and is photo safe. Once cured it resists heat and won't burn.

Better Life Half Price 2nd is $14.31 right now, down from $21.95, Amazon's list price. That is 35% off, or $7.64 saved, and the lowest price in a year.

The IVYROLL Cobweb Duster Extension Pole is $8.99 right now, down from $9.99, which is 10% off. That's the lowest price in 90 days. It has a telescoping 100-inch pole that reaches high corners, ceiling fans, and vents without a ladder. Two heads come with it. A spider web brush takes down cobwebs, and a bendable microfiber duster cleans delicate spots. Mark Frauenfelder bought one for a spider-heavy house and called it "surprisingly sturdy for the price." The heads are washable and reusable, and the silicone tip is safe on furniture.

The Knee Cushion is $6.99, down from $10.99, which is 36% off. It usually runs around $8.10 on Amazon. It's a 11-by-18-inch slab of EVA foam, three-quarters of an inch thick, with a carrying handle. The foam doesn't absorb moisture and resists rips and abrasion, so it holds up on hard, cold or damp ground. Mark Frauenfelder has owned his since 2011 and says it "protects my knees anytime I have to work on anything close to the floor." Kevin Kelly picked it for Recomendo in 2018.