I sold a bunch of spare cars I likely wasn't gonna use anyway and raised a nice amount of extra credits. I then did some campaign races I hadn't gotten around to completing yet, and then got a three-star ticket, which netted me a nitrous kit for the Genesis X Gr.3. As someone who refuses to use nitrous, I promptly discarded this part. I was also surprised that I got 1m credits for getting silver for the current Online Time Trial, as I didn't see a new one to take its place. I also bought a few cars, like the Dodge Tomahawk X VGT, as I will definitely need it for the trophies that require you to reach frankly absurd speeds.
I also don't feel like doing the current Daily Race, and it's highly unlikely I'll get around to the next one, either, as I'll be in Miami Beach for almost the entire week. But that's fine by me, too.
Finally, I decided to stop making liveries (albeit basic ones) for my road cars, as I like the lower-key appearance of them without any stickers, but still installing aero parts and custom wheels. I've even been stripping some of my cars that had liveries installed, down to their original paint schemes, which can especially be nice when they have neat OEM decals that may get removed when making a custom livery, such as on my Mustang Mach 1 '71.
EDIT: Oh, and I also bought my first Lamborghini Huracan, Ferrari F430, and Ferrari F8 Tributo.