Komputer Tutor: My infomercial from the ’90s

Save money and space with one thing that does many things. Time to feel like Inspector Gadget or maybe MacGyver. These are all Father’s Day home runs, too!

• “Write” on: This pen ($9.99) is also a stylus, leveler, ruler, and flathead and Phillips-head screwdrivers.
• 12-in-1: A hammer (21% off, $16.75) that’s also pliers, a serrated knife, a saw, a wire cutter, a prying claw, a nail file, a bottle opener, and flathead and Phillips-head screwdrivers.
• Every car needs one: A flashlight ($23.99) that’s also a seatbelt cutter, a window breaker, a red flashing emergency light, a power bank and an alarm.

I hate waste and wasting money. These items help you get every last little drop of the stuff you paid for.

• For bottles: This bottle-emptying kit ($9.86) has a base cap and three adapters you can use to replace the top on your bottle. Get every last drop of shampoo, dish soap or ketchup.
• For jars: These skinny spatulas ($4.99) are made of food-grade silicone so you can use them to get the last of your swanky eye cream or fancy truffle hot sauce.
• For tubes: A good-lookin’ and good-workin’ squeezer ($12.97) to get the last bit of toothpaste, sunscreen and any other tube-based product.

I’ve used this whitening toothpaste for years to keep my smile sparklin’, but if you’re just getting into the teeth-whitening game, I found some helpers to jumpstart your journey.

• Try this one-week all-natural whitening kit ($22.99) to kick it off. Social media stars have been all over it to get their chompers camera‑ready.
• Or try this two-step system with a polish and a gel ($12.92). You’ll be movin’ on up the teeth-whitening scale in no time.
• Take your whitening game on the road with this pack of disposable toothbrushes (20% off, $9.49), which have a little bead of whitening toothpaste pre-applied. Adding these to my regimen!

Your next flight might be BYOS — Bring Your Own Screen — which is fine until your arm starts falling asleep from holding up your phone for so long. I’ve got three options for hands-free watching. Psst, these are also nice for watching videos at home.

• Secure: This sturdy plastic mount ($13.37) has an adjustable clip and 360-degree rotation for optimal viewing.
• Flexible: The Flight Flap (41% off, $9.34) folds flat, then bends to create a little stand for your phone. Set it up on the open tray table or clip it to the top when it’s closed.
• Versatile: This simple clip ($12.98) works with devices of all sizes — including tablets.

Mike wrote in to ask me for stud finder recommendations. I told him to look in the mirror. Then, I asked around and found three I can confidently recommend.

• Old reliable: The price is steep (29% off, $52.95), but this one’s 13 sensors track stud locations and 13 LED lights show you the center and edges of your studs. It reads depths up to 1.6 inches and runs on two AA batteries.
• Cheap: Find the edges of wood and metal studs with this no-frills model from Craftsman. It scans up to a 0.75-inch depth and requires a 9V battery (not included). It’s 9% off ($10.97).
• Magnetic: Run this little guy ($11.95) along the wall, hit the metal stud, and pop! goes the super magnet. This is the one for me. Maybe for you, too?

When you want to treat yourself to a latte at home, foamy milk is a must. Here are three excellent milk frothers good for coffee, tea or anything else you want to sip.

• Handheld: The Milk Boss ($9.99) makes quick work of a cup of milk and also works great for mixing up matcha and protein powders.
• Manual: Do your own milk frothing with “10 to 100” pumps of the plunger in this stainless steel model ($18.97), which, by the way, is pretty enough to sit out on the table.
• Automatic: All it takes is one button to warm your milk and get it foamy with this electric frother ($33.99). Or skip the heat and make cold foam for iced lattes.

Look at that, back to its roots! We picked out some great reads on sale for great prices.

• Guy Kawasaki’s “Think Remarkable” is 39% off. He shares his insider knowledge from 40 years spent working with companies like Apple, Google and Wikipedia. Amazing book.
• “The Mitford Affair” (61% off) is un‑put‑down‑able historical fiction about the famous (and real!) Mitford sisters during World War II.
• Nab a summer’s worth of beach reads all in one go with the “A Court of Thorns and Roses” box set by bestselling author Sarah J. Maas for 50% off. Warning: They get steamy.
• Tom Selleck is getting rave reviews for his frank and funny memoir for fans of “Magnum PI,” “Blue Bloods” and “Three Men and a Baby.” Grab it at 47% off!
• Nobel Prize winner Daniel Kahneman’s “Thinking, Fast and Slow” has sold over 2.6 million copies. If you haven’t read this book about how we think, snag it now.
• “The Algebra of Wealth: A Simple Formula for Financial Security” was an instant bestseller. Sounds like a great graduation gift to me!
• Read the book “Oppenheimer” was based on: “American Prometheus.”
• And a pick for you, me and everyone: “Dad Jokes: The Good. The Bad. The Terrible.”

I have a new plant on my desk at work — a little pothos. I can’t let it sit there parched all weekend, so I went looking for a solution. Found some good ones!

• Water pots: These ingenious little plastic pots ($13.99 for five) have a water reservoir at the bottom, a cotton wick that sucks up the water and a watering hole for top‑ups.
• Electric: Be an indoor irrigator with this automatic watering system (40% off). This seemed like overkill for my little pothos, but maybe not for your indoor garden or a big plant!
• Bulbs: Fill up these pretty hollow glass lollipops ($13.99 for two), flip ‘em over quickly, stab them into the soil, and your plant will slowly siphon out the water. This is the one I got!