My favourite small time crypto would be gridcoin! It's a similar scheme to golem in ways, through utilising computing power all over the globe to solve algorithms. The only difference is Gridcoin solves BOINC hosted work, which are all related to scientific research. So basically, you can contribute computing power into attempts like curing cancer/aids, map the milkyway, crack enigma codes and much more. Really seems like gridcoin is trying to do something great in my eyes.