Whether you’re assembling flat-pack furniture, fixing a leaky faucet, or building a bookshelf from scratch, having the right tools makes all the difference. A good DIY toolkit isn’t just about quantity—it’s about having the right essentials that are versatile, durable, and up to the task.
Among all the tools a DIYer can own, the hexagon key (also known as an Allen key or Allen wrench) deserves a special spotlight. It might not look like much, but its usefulness across a wide range of projects earns it a top spot. Let’s explore why the hex key is a must-have—and which other tools deserve space in your toolbox.
Table of Contents
- 1. Hexagon Key (Allen Key) – The Unsung Hero
- 2. Screwdriver Set – Your Go-To Tool for Everything
- 3. Tape Measure – Measure Twice, Cut Once
- 4. Claw Hammer – Not Just for Nails
- 5. Adjustable Wrench – Versatility in Your Hand
- 6. Utility Knife – Sharp, Simple, and So Handy
- 7. Cordless Drill/Driver – Power in Your Palm
- 8. Level – Because Crooked Shelves Are a No-Go
- 9. Pliers Set – Grip, Twist, Snip
- 10. Handsaw – Classic, Clean Cuts
- Final Thoughts
1. Hexagon Key (Allen Key) – The Unsung Hero
Small but mighty, the hexagon key is used to drive bolts and screws with hexagonal sockets. It’s especially popular with flat-pack furniture (hello, IKEA!), bikes, and mechanical equipment. Here’s why it’s such a winner:
- Compact and easy to store – Most sets come in a foldable or ring format.
- Incredible leverage – The L-shape design gives you great torque.
- Fits tight spaces – Its small size makes it perfect for confined corners.
- Comes in sets – Available in metric and imperial sizes, so you’re ready for anything.
Pro tip: Invest in a ball-end hex key set—these allow you to turn screws from slight angles, which is a total game changer in awkward spots.
2. Screwdriver Set – Your Go-To Tool for Everything
No toolbox is complete without a solid screwdriver set. From tightening cabinet knobs to opening up electronics, screwdrivers are everywhere. Make sure your set includes both Phillips and flat-head tips, in various sizes.
For even more convenience, a multi-bit screwdriver with interchangeable heads saves space and keeps everything in one place.

3. Tape Measure – Measure Twice, Cut Once
This one’s non-negotiable. A 16- or 25-foot retractable tape measure should live in every DIYer’s toolbox. Whether you’re hanging art, cutting wood, or laying out furniture, precise measurements are key.
Look for a model with a locking mechanism and easy-to-read markings. Some even include a magnetic tip to hold on to metal surfaces.
4. Claw Hammer – Not Just for Nails
A hammer is more versatile than you think. While it’s obviously used for driving nails, the claw side lets you remove them easily or pry materials apart. It’s useful for everything from light demolition to tapping things into place.
Opt for a hammer with a comfortable, non-slip grip and a well-balanced head.
5. Adjustable Wrench – Versatility in Your Hand
When you don’t have the right size wrench, the adjustable wrench (aka crescent wrench) saves the day. It’s perfect for plumbing, bike repairs, or loosening bolts when you’re unsure of the size.
Look for one with clear size markings and a smooth jaw adjustment. A 6- or 8-inch wrench works well for most household jobs.
6. Utility Knife – Sharp, Simple, and So Handy
From opening boxes to trimming wallpaper, a utility knife is a DIY essential. A retractable blade design is safest, and models with replaceable blades are the most convenient.
It’s one of those tools you’ll find yourself using far more often than expected, so keep it sharp and always close by.
7. Cordless Drill/Driver – Power in Your Palm
If you’re doing anything that involves screws or pilot holes, a cordless drill is a game-changer. It handles jobs in a fraction of the time and with way less effort than doing things manually.
Choose one with:
- Variable speed settings
- A comfortable grip
- Rechargeable batteries
- A selection of drill and driver bits
You don’t need a heavy-duty model for everyday use—compact drills are often more than enough.
8. Level – Because Crooked Shelves Are a No-Go
Eyeballing is great—until you step back and realize your shelf is totally off. A spirit level ensures perfect horizontal or vertical alignment, every time.
For most home jobs, a 9- to 12-inch level works well. Some high-end models even include lasers for extended accuracy across rooms.

9. Pliers Set – Grip, Twist, Snip
Pliers give you control where fingers fall short. Whether you’re pulling nails, twisting wires, or gripping bolts, they’re incredibly useful.
Your kit should include:
- Needle-nose pliers for tight spaces
- Slip-joint pliers for versatility
- Wire cutters for basic electrical work
Rubber grips offer comfort and prevent slipping.
10. Handsaw – Classic, Clean Cuts
Power saws are great, but a trusty handsaw is lightweight, quiet, and doesn’t require batteries. For small woodwork projects or trimming branches, it’s incredibly effective.
There are different types—like crosscut saws for general use or coping saws for fine work. Choose one with sharp, high-carbon steel teeth and a comfortable handle.
Final Thoughts
A good set of tools is like a safety net for DIYers—you’ll always be ready when a project (or surprise repair) pops up. While every tool on this list has its own strengths, the hexagon key is in a league of its own. It’s simple, reliable, and incredibly adaptable.
Building a solid toolkit doesn’t have to be overwhelming. Start with these ten essentials, learn how to use them well, and you’ll be handling home improvements like a pro in no time. Happy DIY-ing!
Further Reading