Don't be stuck with the few pens that came with your Spirograph set. Lots and lots of colors are available. Here are my favorites.
Kahootz Spirograph Deluxe Kit
Spirograph Pens Archives - SpiroGraphicArt
Found a type of spirograph I'd never seen before. Had to get
Spirograph Pen Refill Kit - All 4 Colors
TWICE AS MANY GEARS as the original Spirograph! You'll have super fun with the Super Spirograph Kit that comes with unique arcs that snap together to
Kahootz Super Spirograph Design Set-- 50th Anniversary Edition with Twice as Many Gears -- For Ages 8+, Multi
Spirograph ชุดอุปกรณ์เสริมการศึกษาชุดของเล่นวาดภาพและเกียร์
, COLOR GEL PENS WITH 4 INK TYPES: gel pens set includes a variety
Color Gel Pens - Gel Pens for Kids - Coloring Pens - Gel Pens Set - Pen Sets for Girls - Spirograph Pens - Pen Art Set - Artist Gel Pens - Sparkle
VaOlA ART Colored Pens 30 Psc Glitter Gel Pens for Kids Colorful
Spirograph Pen
Spirograph Multicolor Pens : Target
Puzzle Spirograph: Interlocking Gears Wheels Drawing - Temu
This kit includes one refill each of red, blue, green and black ink. Old-Style ballpoint pen refills that work in the original Spirograph pens 1967,
Spirograph Pen Refill Kit - All 4 Colors
Whole Earth Provision Co. PLAYMONSTER Travel Spirograph Design Set
Spirograph — Design Set Boxed — Arts and Craft Kit