87+ switches (spares!)
87+ diodes, 1n4148 or some form of fast switching diode that fits either the SMD footprint or the thru-hole. Those round SMD ones can be a ***** cuz they rollin.
20 3mm LEDs (Caps, LCtrl, WASD, Most of the F-row) flat top, no shoulder (also called column) will require no mods. It's not hard to cut shoulders off though, but sanding 20 domed LEDs flat can be painful on your fingers and I don't recommend trying to do it any other way.
4 2x Cherry PCB mount stabs
1 spacebar Cherry PCB mount stab (6.25x or 7x depending on your keycap set)
1 set of keycaps to fit your layout (offset caps is possible, mod-row is kit dependent)
bling the switches however you want, stickers, grease, TLC. I recommend paying close attention to your choice in LED light out put (mcd) since they all get the same amount of power and it can be disappointing to be blinded by blue and have the red/amber/yellow sedate and laid back.