The first type is commonly known as "Mini-blade" and, while these can be bought in selection packs, these nearly always includes low rated (2, 3, 4 & 5Amp) fuses that the RX8 doesn't use.
Better to buy just the ratings you need and, better yet, to upgrade to LED Mini-Blade fuses that light-up if they blow, making it much easier to find the right one in the 'box.
List below are linked to items in the AceParts ebay shop, as they are doing a 25% sale.
This selection is for 2 off each of the LED mini blade fuses plus 1 off of the PAL fuses (not including the 120A, which they don't stock )
The selection needed to cover all the circuits would be;
the number off each above is the total assuming you wanted to replace all the current mini-blades with LED versions, based on a 231 with heated seats. Note that the packs linked on ebay are 2 off, so you'd only need 3 packs of 10Amp fuses, for example.
192s save a 20Amp, as they don't have the headlight washers
Cloth seats also save a 20Amp
PAL (J-Type) Slow Blow
120 (on the battery connector)