What do you all do with your coins?

I am not too sure what to do with my coins, I am making about 3T a run in T10. The only thing I can spend it on in the workshop is like ELS and I can only buy a few upgrades at a time cause it is too expensive, and Enhancements are starting to get in the upwards of 4-6T. The labs that I am running also aren't very expensive so I just sit on coins half the time.