You'll want to choose something that is CPU exclusive or doesn't favor GPUs. Cryptonote coins are going to be the most popular suggestions. At the moment, Electroneum is still profitable, but much less so than it has been. I've been switching between Intense Coin (which I'm probably now bailing on, as it seems like they've sold out. So maybe, it would be profitable to keep mining, but it doesn't feel right.) and Ultranote. I have moderate hopes for Ultranote, it seems cooler than a lot of projects where I can mine 1000s of coins with my CPUs. Verium is CPU only, but the rewards are really slow at this point. Could be worth it in the long run, though, as it seems like a legit project.

Other potential things to investigate, though I don't recommend them in any way as I've never tried them out and they could be viruses wanting to get up in your business.
-ROI coin
-Iridium

Try and find the newer coins out there. Easier said than done.