The owner manual is silent about the fuse type used in the Prius (the low amps one, like the one used for the 12V outlets). I bought standard ATC 15A fuses and, as I needed to replace one (120V inverter plugged in 12V outlet that tend to blow fuses easily...), found out that the Prius fuses have shorter "legs" than the ones I bought. I can use regular ATC fuses, but they protrude and prevent the fuse box cap to be put back in place. What is the exact type of the fuses? I haven't been able to find where to buy some.
I googled ... try tessco.com for mini fuses. edit: right, probably should be low profile mini fuse, and amazon has several assortments. Also, I will need to pull some and look more carefully ... and make a list of all the fuse ratings used.
From their website, if this is mini-ATC, which is not the correct format. The metal pins should barely exceed the plastic part. They seem to be micro-ATC fuses. Having the correct name (thanks rrolff), I found them on eBay. This new format is certainly not common yet, as a search gives only 1 provider, specifying they are for Toyota vehicles. So, the correct type is micro-ATC.
They are called "low-profile mini" fuses. You can get them from Littelfuse. I got a variety pack from Amazon: http://www.amazon.com/gp/product/B001FXN6JS/ref=oss_T15_product (Read the comments because the image/description is not correct. You get 55 low-profile mini fuses for $14.) I've also seen them at AutoZone.