Calypso offers daily missions that reset every 16 hours from the time you pick them up. I would suggest that you check all categories for the random bonus missions and do your best to complete them. The equipment that you can trade for these tokens is very valuable
When you are starting out, consider abandoning the regular daily missions from the professions that are not your main.
- Mission: The Daily Hunter Category 1 (Daily)
- Mission: The Daily Hunter Category 2 (Daily)
- Mission: The Daily Hunter Category 3 (Daily)
- Mission: The Daily Miner Category 1 (Daily)
- Mission: The Daily Manufacturer Category 1 (Daily)
There is also an Argonaut daily to complete, if you pursue a higher level of hunting. This will double in giving you iron for the crafting bonus mission.
http://www.entropiawiki.com/Info.aspx?chart=Mission&id=1346