Single-use kitchen products are silly, not to mention space-inefficient.I agree, which is why I called it out as one of the few instances where it is worthwhile. And speaking of pots and pans, Cuisinart makes a great set of pots and pans, covering everything you need, that sells for $149 from Amazon. That, and a good knife, and a few other bits and pieces, are most of what you need to have a nice cooking kitchen for dinner for a group of up to about four (and the two small ones are good for single and double meals).
To put things into perspective, I don't even own a microwave. But, I consider a rice cooker absolutely mandatory if you eat rice regularly. If you don't eat rice regularly, then obviously a rice cooker is not a useful expenditure or use of space. I consider it a good investment of both, because my most common meals are various kinds of Chinese, Indian, and Mediterranean foods that include rice as a base.
Even if it makes oatmeal and rice, that's basically just a bunch of starch. Might as well just eat Ramen.
I'm not a believer in the Atkins anti-carbs crusade, nor do I accept that all grains are created equal. Oatmeal and brown rice are both quite reasonable "slow" carbs, when combined with proteins and vegetables. Ramen is not a slow carb by any stretch of the imagination, and is actually "just a bunch of starch" (it also has way too much sodium, if prepared as directed).