Use a loom band to easily identify L and R earbuds
If the writing on your earbuds is too small to see, or if it's too dark, then attach a loom band around one of the leads.
More Electronic Tips
Label your electrical cords so you don't have to trace them back every time you're fiddling with the power strip.
Create a phone stand out of your glasses or sunglasses.
Flip your glasses upside down, and rest your phone (in landscape mode) between the lenses and the temples. Useful when showing people something on your phone.
Wrap a remote control in a plastic bag or saran wrap in hotels.
Chances are the dirtiest thing in a hotel room (aside from the toilet seat), is the remote control. They rarely get sanitized, so I always keep a plastic freezer bag (you can also use saran wrap) and immediately put it inside when I check in.
You can organize cables inside of empty toilet paper rolls.
By neatly bundling up your electronic cables/cords, you can stuff them inside of an empty toilet paper roll which makes it very compact easily organized when storing them.
Most newer TVs contain a built in USB port.
If you're traveling and at a hotel with a TV and no adapter for your phone charger, you can plug into the TV to charge your phone.
When installing a new Wi-Fi router, you can re-use the previous settings from your old router.
By using the same Wi-Fi name and password, you don't need to re-login to all your devices post installation.