Something new doesn’t have to be something “big”. I think giving yourself permission to try something new without expectations can also give motivation to try the next thing “new” after that!
Planning a trip is sort of an easy way to start if you have the funds. Again, doesn’t have to be a trip around the world - maybe you just explore a new city within a couple of hours of your home. Start with something doable - trip or otherwise.
I can be a homebody and as said above, love my home, love my routine at home - but the thing to remember is that when you go try that new “thing” - when you get back home, that routine, music, blanket collection - it’s all still there to enjoy!