Blocks
Blocks came in the following colors: yellow, red, green, blue,
orange, and purple. Yellow and red also came in 2 pin versions
with pins on opposing sides. All other blocks came in 1 pin versions.
Purple block was triangular. Pins came in both round and octagonal
cross sections. Since the holes in the blocks are octagonal, round
pins could rotate in the holes, octagonal pins stayed fixed. Click
here for more info.
2 to 1 Converter

This was only available on later sets. Essential for centering
parts in certain situations.
Girders

Came in the two sizes shown, also in both round and octagonal
pin versions.
Panels
Came in two sizes, 3x6, and 6x6. Panels could be frustrating as
there was no center hole on the 6 hole side. This is one case
where the 2-to1 converter was needed. However, even with it you
could connect to the center of a 3x6 panel, but not a 6x6 panel.
Wheels, Axles, Gears, Motors

2x3x5 cube with one springwork driven axle. There was also a 1x1x6
rubberband driven motor in some sets. Wheels came in two sizes.
Wheels doubled as gears and would mesh with green pinion gear.
Click here for more info.
Pulley

Used with axles and string for toys like cranes and winches.
Body Parts

Orange human head, hands, and feet. Green animal head.
Tubes

Pins fit inside tubes. Green tubes came in 3 lengths (1, 3.75,
and 7.375 in.) Orange tubes were same size as shortest green.
Connectors

Three types: blue flat head pins, green dome headed pins, and
red double sided pins. Red pins were used mostly with tog'lmen.
Bellows

Same setup as found in Major Matt Mason toys.
Windows and Doors

Window was a clear styrene part, 1x2, with one pin on each side
of the long end. Door was really a small 2x3 yellow panel.
TOG'L Men
Came in later cube sets and also sold separately.
Added bonus: Patent for TOG'L BLOCKS