Not sure of your skill level or programing, but here finding someone who can do architectural drawings (details) is crazy. Finding someone who understands building anything is a challenge and then knowing who to put it on a computer is another thing - both those skills in one person is a jewel! You have great potential to be busier than you anticipate if this is your skill.I do 3D drawings for people with small interior design/decorating projects. I haven't done the BIG one yet and I'm hoping to soon.
It's not something I've done very often but I am pushing for more projects right now. Actually going to put money into advertising on social media.
I have thought of doing other things. Like commission portraits or homemade decor, with clay or wood for instance. But those would require way more time than I can actually spend on them. Maybe every once in a while. Or I just have to make the time for it.