🟨 Yellow — Easiest
BITS OF HARDWARE
BOLT, NUT, SCREW, WASHER
🟩 Green
PLACES WHERE IDEAS ARE DEVELOPED
INCUBATOR, LAB, SANDBOX, TEST BED
🟦 Blue
GO BACK AND FORTH
ALTERNATE, SEESAW, SWITCH, TOGGLE
🟪 Purple — Hardest
WHAT "SUB" MIGHT REFER TO
BELOW, HERO, REPLACEMENT, SUBMARINE