Adventuring for profit:
Started with two sims (this really works best with a household of two)
Sim 1 (Simon)
Adventurous, Athletic, Brave, Charismatic, Handy - this is my dungeon crawler
Sim 2 (Ginny)
Adventurous, Angler, Great Kisser, Loves the Outdoors, Virtuoso - all that's really important here is that she's Adventurous. Loves the Outdoors is so that when she's excavating relics she gets a nice motive from being outside.
Mods: Error Trap, because WA doesn't work without it (Twallan, you are a Prince among Men)
Premium Content used: MultiTab, which is so awesome, it's almost a cheat.
The goal: cut the money grind by making a truckload of Simoleans in the first calendar week.
Day 1: Simon & Ginny get an empty lot and do a little kissing and a little shopping. Bought them each a MultiTab, plus got Ginny some instruments (she never earned tips on them, but they made her happy). Did not build a house or purchase furniture. Wait for the first wish to travel (it doesn't take long) and then we're off to China for three days.
When we get to China, there are 9,420 Simoleans in the bank.
Day 1: he runs off on a dungeon dive adventure while she skills up on martial arts
Day 2: she collects metals and rocks for his adventure and finds relics, too!
Day 3: by day 3 at the Hostel, sims are usually hurting (and who can blame them?). She did a little fishing, he did a lot of adventures
When the vacation is over, they come home with metals, gems and insects worth a little over 15K (after cutting and smelting, with the cost of the cutting and smelting already subtracted from that total) plus 1,657 worth of common relics and 1,691 in Chinese Vases and another 900 worth of space rocks.
Bought some things at home: a display case for transfiguration, an outdoor shower (comes with Sunlit Tides, very handy thing to have, especially for sculptors and inventors) a fence to put around my little home campsite. A table, a couple of chairs, and an outdoor kitchen set me up for the next few days at home (although I will have to be creative about finding places to use the toilet).
More importantly, my sims have been skilling up with the MultiTabs like mad, and they've gotten enough points for each of them to get a Lifetime Reward. He now has Opportunistic (making his adventuring rewards more rewarding) and she has Prepared Traveler.
After two days at home, she's got Jetsetter and he's got Prepared Traveler. They've also done their first transfiguration and gotten a Soulpeace worth 2,847. Sadly, it doesn't occur to me that an emerald cut would make this Soulpeace the perfect foundation for a tiberium transfiguration, so we are going to Egypt with a lot less cash than we could have.
Because both sims have Prepared Traveler, they get a 9 day vacation in Egypt for the price of 3. Again, she fishes and excavates while he adventures. Using the MultiTab, they both skill up to 8 in Photography extremely quickly. She really hasn't done serious fishing - I had her use various baits in quick succession to complete the Catch Every Fish wish to get the 7,500 lifetime happiness points, but the total number of fish caught and the value of the fish weren't extraordinary - the most valuable fish she had were some Great Crocodiles. She had enough fish to get about 1K Simoleans for them from the food merchant, which gave her enough to buy the expensive camera. A few photos around the market later, and she's level 10, a quick vintage panorama each of a pyramid and the sphinx, sell all photos, and buy a second camera for him. For her, this means that she gets called a lot with requests to bring a picture of a treasure chest or a floor switch for visa points and Simoleans.
By the time they returned home, without selling anything else except a few skill max certificates (so just by filling opportunities) my sims had 19,382 in cash, plus 3,697 in money bags. My adventuring Sim had a level 2 visa, they both had quite a few more LTRs, and enough gems, relics and metals to make plenty of tiberium.
On Friday of week 1, transfiguration of metals, gems and relics have yielded a balance of 217,131, using none of the collection relics in the process, plus a 32,359 compendium in inventory and another 23,000 Soulpeace gem (value after cut) on its way back from the gem cutters. My sims had acquired a variety of skills, and maxed out several, and had put together a nice package of LTRs.
Overall, this isn't something I'd do as a long term strategy, say instead of playing guitar for tips, but my second sim could easily have been grinding performances (or writing, or fishing) off camera while my adventuring sim was dungeon diving. For getting a household jump started, adventuring can be a way to make some pretty good money very quickly, plus collecting enough objects to make your house beautifully decorated.