Tour the Galaxy; selling loot from Foundry missions; Starbase 24; Mk XII purple consoles from Children's Toys... When you have the capital, taking advantage of the fluctuating market during key sales or lockbox events is a good idea too.
Do the Dilithium mining every day. Get good enough to get rare particle traces. If you get the good ones and have more than one character active, you can get a couple of hundred thousand for little effort on the exchange.
Grind dilithium. Buy Zen. Buy keys amd fleet support packs. Sell on the exchange.
Do a grinder mission in the foundry. They shoot back now but you should be able to get some good drops to sell.
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