Tune the flower garden.
For grown-ups and teachers.
A real Spirograph gear can only draw flowers whose petals divide the circle evenly — 2, 3, 4, 6, or 12 on a 12-note clock. These eleven wheels draw every count from 2 to 12: the divisor wheels are honest round gears, and the impossible counts — 5, 7, 8, 9, 10, 11 — get the warp.
The trick is the same one behind the oval cogs in old gear sets: the drawing plane is gently stretched, sector by sector, so every petal lands exactly on a note. Each wheel carries the most evenly spread set of its size — 5 draws {0,3,5,7,9}, 7 draws {0,2,4,5,7,8,10}, 8 the octatonic {0,1,3,4,6,7,9,10}, and 9, 10, 11 fill in all but the most symmetric leftovers.
Wide petals cross big intervals; narrow petals mark the half steps — the flower's shape is a picture of the set's interval structure, blooming in mirror symmetry about the vertical 0–6 axis. Watch the gear itself squash and stretch as it rolls: that is the warp at work.
Crank forward to sing the notes ascending; crank backward to descend. Every flower closes where it began, ending on the home note one octave higher. Round, Pointy, and Loopy move the pen on the wheel — same music, new petals.
Tap 🎨 Fill to fill every petal with its note's Harken color, topped with a center disc — white, black, or tonic-colored (Grown-Up Settings). Layered flowers bloom as whorls, like a dahlia. Tap again for line art; nothing is ever lost.
The five ✦ stars at the end of the shelf are a different animal. Instead of stepping around the clock in order, they connect the notes in fifths — every line a leap of seven — so the chords cross the middle and the points touch the ring. Crank forward for rising fifths, backward for fourths; the biggest star strings all twelve notes into one unbroken path that closes right where it started. It is the same circle of fifths that draws the Harken galaxy. Round, Pointy, and Loopy bend the star's lines, and 🎨 Fill paints it like a stained-glass rose window.