I want to run a business,but have no idea what. 1)Not at home,2)Money is no problem,3)Don't care about profit,just doing it for craps and giggles. "The world is your oyster". Hit me with ideas that would be fun.

Get To Work EP - Open an antique store that sells rare collectibles (crystals or fossils).
Get Together EP - Open an office, make a club that do painting. Sell their paintings.
Dine Out GP - Open a Krusty Krab Fast Food Restaurant (Spongebob reference).

(not tested. Is this even possible?)
Discover University & Get Together & Get To Work EP - Set up a group that does craft robots, then open a store that sells them.

(at home, unfortunately)
Base Game - Start out your indie game company inside home garage. Earn money only from games you made. Finding a Job is prohibited.

Is there a ticket counter like in TS2 to do cover charges to enter a lot?

I have a sim that runs a used furniture store. She dumpster dives and gets broken crappy stuff and casts the repairio spell on it and then sets it for sale. That requires the eco expansion though. I haven't done a bakery yet but I plan to some day.

There is a lot trait that does this by Little Ms Sam. No tickets. You just get charged when you go to the lot. And if you have the mod to own more lots, you get the money when sims visit the lot.

OMG I LOVE this! I haven't done anything with the magic stuff yet. I just started playing 4. I was a Sims 3 hard core fan. But I was missing the junk yards and fixing old stuff so much. I didn't know about this spell. THANK YOU!