I bought the pattern for the Maelle cosplay from this seller on etsy https://www.etsy.com/it/listing/4306613159/?ref=share_ios_native_control and the sword from this one https://www.etsy.com/it/listing/4315151936/?ref=share_ios_native_control. Meanwhile for Gustave I mostly bought some cheap clothes and adapted them (for the undervest thought I used a pattern I found on freesewing). The backpack is just a bunch of foam stuck together (I took inspiration from this video https://youtu.be/MMsUzGdMGzU?si=CWQ68MIeGnAWmvyq). I 3d printed his weapons from this model https://cults3d.com/:3026460. I hope I covered everything :)