We had a heat wave this summer which was making our baby miserable, and I ended up receiving a text from my wife at work, informing me that she had bought an air conditioner and that I would install it when I got home.
Unfortunately, we live in an apartment and she picked up a sash window unit which could not be used without violating our rental agreement. She was lucky to find anything, and I doubt that there were any portable units available, anyway.
My redneck solution was to pick up a big old roll of thermal reflect foil and some duct tape. I stuck that bad boy at the bottom of the patio door and cut and duct-taped foil into the rest of the opening. Then I covered up the nursery window (at the other end of the apartment, where the a/c did not penetrate) with the same stuff.
Ugly as sin, but it got us through the “living on Venus” period without going insane. I’ll figure something less redneck out in time for next summer.