Okay, after reading the comments I have determined that this is a magic pocket dimension, not a sci-fi pocket dimension. That's important. Sci-fi pocket dimension gas too many restrictions, but OP has been kind enough to gift us a magic pocket dimension. If I pop in on a flight, I don't fall to my death when I leave.

So, I set it up as a space for living in tight quarters. Like an RV, I guess. I make sure it has some exercise equipment, and I give it to my mom to use. She's disabled, and can't move a lot under normal conditions, and for reasons I won't go into, also can't do aqua therapy anymore. Low g exercise could help her, and we could slowly increase the gravity. Eventually, she could be healthy enough for surgeries that could get her to a better standard of life.

Book cheap flights, cruises, et cetera. Teleport into the room, and back out at the end. Travel the world. If possible, teleport my mom in whenever somewhere is not wheelchair accessible, and then back out once we've passed that point.

Make money to support the travel lifestyle by being a magician, or smuggler. Whenever possible use the pocket dimension to help people escape bad situations. Teleport in someone while in my car, drive to safety, teleport out. They're coming out relative to the vehicle, not the vehicle's position. Excellent for helping refugees, domestic violence victims, et cetera.