Exercise balls are practically ubiquitous in households with at least one health-conscious dweller. Nearly everyone has one of those large, inflatable translucent balls sitting in a corner somewhere. But how many times have you seen an Exercise Oval like this? It's like a regular exercise ball, only... oblong! And it won't roll away to the side when you least expect it, sending you crashing to the floor and requiring paramedics. It'll only roll forwards or backwards. Hooray! $14.99 USD.