Blackout curtains have been essential for me. Instead of earplugs, I prefer a noisy fan. Circulating the air is good and the constant white noise normalizes hearing stuff, so neighbors or traffic or whatever isn't different enough to wake me.

My wife has a Bluetooth sleep mask, so she can play soothing stuff from headspace or YouTube or Spotify while keeping light out of her eyes. You can find it pretty cheap.

As we enter dry winter months, a small humidifier in the bedroom might also be a good idea.

It also helps to have a routine on how you wind down for bed so that your body and mind can ease into being ready to sleep even if the clock or the sun are telling you otherwise. Maybe do some light reading, wash your face, set out something for the next day (like your outfit), whatever you need and can repeat nightly.