also check out specialty places...it's probably too late now, but elementary schools that have strong therapeutic services can be really interesting to get some good peds experience. I shadowed at an alternative school with a PT for a few days and gained a lot from that experience.
Home health would be unique as well - not many people have that experience coming into PT school, and it's an interesting field.
SNF or acute care (unless that's what you mean by inpatient?) and long-term rehab are also potential areas to explore.
Depending on the focus of outpatient, you can sometimes get a variety of worthwhile outpatient. For example, I worked for a 90% ortho outpatient clinic, but volunteered at an outpatient 100% neuro facility where it was all post-stroke, MS and Parkinson's patients, etc. It's an entirely different world.