I have a standard PSK in a tabaco tin, and urban PSK in an altoids tin, an FAK in a Couglans FAK 2 container (curved and yellow plastic), a fire kit in a round tin with a pierced lid so that it can be used to make char cloth, a food precurment kit which contains:
25ft of paracord
1 roll of dental floss
7 ft of stainless steel wire
1 awl
2 large Xacto blades and 3 scalpel blades for arrows/spears, food prep
5 strike anywhere matches
1 trick relighting birthday candle
4 fish hooks
4 split shot
1 scroll saw blade
All this is held in a cylindrical tin approx. 3" high with 2" diameter.
I also have a shelter kit that contains a space blanket and a large candle in a tabacco tin in a ziplock bag. Oh, and a micro kit which i have never carried, I just made it for fun.