Why Your Next Smart Home Upgrade Might Already Be in a Drawer
Smart home gear is pricey. Between hubs, sensors, and switches, the costs add up fast. But here’s the thing: you might already own useful Home Assistant accessories without realizing it. That tangled mess of cables and forgotten gadgets? It could be a goldmine.
Before you drop another $50 on a new gadget, take a look around. The old phone in your nightstand, the USB hub you stopped using — these can all play a role in your setup. Let’s dig through the drawer and see what’s worth rescuing.
1. Old Smartphones and Tablets: The Ultimate Remote
That cracked-screen Android from 2019 isn’t just e-waste. With a little setup, it can become a dedicated dashboard for your Home Assistant interface. Mount it on a wall or prop it on a stand, and you’ve got a control panel that costs nothing.
Install the Home Assistant Companion app, and you can monitor cameras, toggle lights, and check sensor data. Even an old iPad works. Just make sure it stays plugged in and set to never sleep.
Pro tip: Use a fully kiosk browser app to lock it into a single view. It’s like having a $200 tablet controller for free.
2. USB Flash Drives: More Than Just Storage
Got a bunch of tiny USB sticks lying around? They’re perfect for running lightweight add-ons or storing backups. Home Assistant can use a flash drive for the media folder, or you can run a simple database backup routine.
Better yet, use one as a boot drive for a Raspberry Pi setup. It’s a quick way to test new configurations without touching your main system. And if you’re feeling adventurous, a USB drive can host a secondary instance for experimentation.
Just remember: flash drives wear out. Use them for non-critical stuff, not your main database.
3. IR Blasters and Old Remotes
That universal remote from 2015? It might still work. Many Home Assistant setups include an IR blaster, and you can pair it with old remotes to control TVs, ACs, and soundbars. Instead of buying a new Broadlink, check if you have an old Samsung remote that can be trained.
If you have a spare IR emitter, connect it to an ESP8266 and flash it with Tasmota. That turns a $5 chip into a smart IR hub. You’ll be able to control legacy devices through Home Assistant, and the old remote becomes a physical control that doesn’t need a battery-eating hub.
It’s a bit of a project, but the satisfaction is real.
4. USB Webcams: Instant Motion Sensors
That old Logitech webcam you replaced for Zoom calls? It’s not just for video. With a bit of software, it can act as a motion sensor or even a basic security camera. Home Assistant’s generic camera platform can pick up the feed, and you can add motion detection using tools like MotionEye.
Set it up near a window or doorway, and you’ll get alerts without buying a dedicated IP camera. The quality won’t match a modern cam, but for a spare room or garage, it’s more than enough.
Just ensure it’s plugged into a machine that’s always on, like a Raspberry Pi or an old laptop.
5. Power Banks: Uninterruptible Power for Your Hub
Power outages can wreak havoc on smart home systems. A power bank can keep your Home Assistant hub alive during short blackouts. Connect it to a Raspberry Pi or a mini PC, and you’ll get a buffer of 30–60 minutes, depending on capacity.
Some power banks even support pass-through charging, so they stay topped up during normal operation. That’s a cheap UPS solution for your smart home brain.
Check the output voltage — most modern hubs accept 5V, so any standard power bank works. It’s a simple hack that gives you peace of mind.
Repurposing Is the Smartest Smart Home Move
You don’t need to buy new gear to enjoy a smarter home. The Home Assistant accessories you already own can handle a surprising amount of heavy lifting. From old phones to power banks, the junk drawer is a treasure trove.
So before you hit “buy now,” open that drawer. You might find exactly what you need — and save a few bucks for something that actually matters. For more ideas on cutting costs, check out our guide to budget smart home upgrades and DIY Home Assistant projects.