Take Your Goldfish For A Walk
Everyone knows that walking the dog is a great way of hooking up with members of the opposite sex. It all starts with the little rascals having a tussle, and before you know it, eyes meet across a bag of fresh dog poo. But hey, having a dog is such a commitment, and a lot of landlords are less than wild about them. The solution?

Why, the Portable Fish Bowl. Lets face it, goldfish take a lot less looking after, don't necessitate carrying bags of excrement around with you, and die after a few short years should you get bored of them.
Alas, as this is the work of a design student it is only a concept prototype at the moment, so if you want one you're going to have to ask very nicely.
But just think about all of the attention you'll get on your trips to the park. And not just from the men in white coats. Hopefully.