Finding the perfect costume for Book Week can be a challenge, especially for boys looking to make a statement. When boys only wear a particular colour it can make things extra tricky. Luckily we have done the hard work and curated a list of 5 green book week costume ideas that you can use with your boys.
Creativity and fun can come together with these five unique costume ideas that capture the spirit of the occasion while allowing for personal expression.
From classic favorites to modern inspirations, each option encourages kids to engage with literature and creativity.
If you liked these – check out our more comprehensive list of David Walliams Characters that your boy might like to dress up as.

Top 5 Green-Themed Book Characters
- The Grinch
From Dr. Seuss’s How the Grinch Stole Christmas, the Grinch is known for his distinctive green fur and mischievous personality. His transformation from a Christmas thief to a joyful character makes him a fun choice. Get your Grinch costume here. - Green Eggs and Ham
Another character from Dr. Seuss, this book presents Sam-I-Am, who offers green eggs and ham. The vibrant imagery makes this character appealing and easily recognizable. A relatively easy costume to make following a DIY or the more apprehensive boys could simply take a paper plate with some green eggs and ham drawn on! For those who would like to purchase an outfit. - Peter Pan
The boy who never grows up, Peter Pan from J.M. Barrie’s novel, is often depicted in his green outfit. His adventurous spirit and connection to the magical land of Neverland create excitement. - Kermit the Frog
Associated with the Muppets, Kermit has featured in various books and media. His friendly demeanor and iconic green color make him a beloved character for many children. - The Hulk
Originating from Marvel Comics, the Hulk is a superhero known for his strength and green appearance. His character embodies resilience, and superhero themes resonate with young boys.

These characters can inspire memorable costumes for any green-themed event or book week celebration.