Here's my recommended list of the best brush pens for kids who wants to start learning brush lettering.
Eglyenlky Markers for Adult Coloring, 100 Colors Dual Brush Pens Art Coloring Markers with Fine Tip and Brush Tip for Adult Kids
Artugn Dual Brush Marker Pens, 72 Colors Art Markers Set with Fine and Brush Tip for Kids Adult Coloring Book Bullet Journaling Note Taking Planner
Tombow Dual Brush Pen & Other Pens For Hand Lettering Beginners
Tombow Dual Brush Pen & Other Pens For Hand Lettering Beginners
5 Types of Brush Pens for Hand Lettering Beginners - Ensign Insights
The Best Markers, Pens, and Tools for Hand Lettering - Creative Market Blog
Sharpie Brush Tip Pens
THE BEST BRUSH PENS FOR KIDS - One Kind Letterer
Zebra Funwari Brush Pen Set 6/Pkg Assorted Colors
Shuttle Art dual tip brush pen set has 30 vibrant colors, which will arouse your interests in calligraphy, underlining, drawing, doodling, adult coloring books and hand lettering. And 30 matched colored cap design makes it easy for you to recognize each color. 1-4mm flexible fiber brush tip and 1mm fine tip in one marker, allows you to create medium or bold strokes by changing brush pressure and experience fine strokes with fine tip.
Shuttle Art Dual Tip Brush Pens Art Markers, 30 Colors Dual Tip Calligraphy Pens Fine and Brush Dual Tip Markers Set Perfect for Kids Adult Artist