Are we saying "hypothetically speaking?" Are we making suggestions for you or if we, our own selves had, $150,000?
Ok, If we are making suggestions for you because perhaps we aren't saying hypothetically here....then I would say, follow your heart. I bet you have some things off the top of your head that you can think of to do to spend it...invest it.... And none of us here would know better than your own heart.
If we were saying hypothetically if we had that much money our own selves to find use for...I'd pay my lawyer, pay my x's lawyer, tip the judge, stay in my own childhood home rather than be forced to move and make the updates that are needed to make it a better? insulated? dry basement? can close the windows? don't trip on peeled up linoleum? sidewalk buckle fixed? chimney repaired? home. And drats...now I've probably over spent.
Well, if I could hide it from the Missus, I would build my Workshop Man-Cave complete with a beer fridge and a TV, microwave, then wait for my parasitic relatives to come over and clean me out cause "I'm rich and can afford it"
In reality, I'd pay off my kids college loans and make improvements to the home-sweet-home.