chicken babies: No-Sew Knight Costume Bravery, Cub scouts.
cardboard Knight costume, unpainted by wrnking,
The Children's Nest: Fun homemade Knight & Dragon Costumes.
Easy knight - tunic and crown out of felt and I could crochet the grey headpiece
DIY Pillowcase Knight Costume for kids . great for playtime, dressup and Halloween
Here's an easy knights costume, all you need is a gray hoodie, a white tee and some markers - voila!
Fight the dragon in this Scarlet Knight Toddler Costume. Includes costume top and pants. Please note that shoes and sword are NOT included.
Forum Medieval Knight Deluxe Costume Brown Standard * Find out more about the great product at the image link.
Easy DIY Kids Knight Costume Tutorial
Easy Kids' Costumes: Knight's Shield - Printable (and Free!) Halloween Templates on HGTV
This tutorial's version involves no sewing, but I think it's even better to add a final step and sew around all that applique. The knight costume will last longer!