Anything below level 66 or so you can solo the trash near a chest with the help of some cooldowns. You obviously need some decent gear, and a non-dagger spec helps too. To be honest, though, there are much better ways to make money.
Fly around the Dark Portal for mineral nodes then there are always 2 to 4 mineral nodes in the Cavern with Sporeraggers (sp?), I leveled my Engineering and Mining so quickly this way.
chests is a waste of time. quests / dailys ftw. If I had to pick one id say ramps. I solo it quite often for leveling friends alts to get through the late 50's
Fly around the Dark Portal for mineral nodes then there are always 2 to 4 mineral nodes in the Cavern with Sporeraggers (sp?), I leveled my Engineering and Mining so quickly this way.
The nodes around the Dark Portal aren't there anymore.