the gold heart, I've got to either keep or sell. I was vending Heart of Golds, and I caught a few pretty good deals in the Marketplace. I sold most of them for around average price for profit, but then it just looked so darn cute, I had to keep one for myself.
The heavenly drapes I think was from the Promageddon event. I plan to keep the event items I come across. Plus, it might come in handy with my completed avatar.
Same goes for the ears. I bought them at the same time. Not a lot of people notice, but I've been wearing the fox ears and tail nonstop, 24-7, 365 days a year, every year... ever since I bought them. I'm not planning on taking them off anytime soon.
an item? umm... i don't really have much in terms of items, except for the free stuff from daily chance and skittles world, which I usually sell right away. Have you tried vending? it's basically buying underpriced items on the marketplace and selling them for around normal price, so you earn the difference as profit. That's how I'm making most of my gold.