Materials:
I used:
-Hobbii Rainbow Cotton 8/4
-Size 2.5mm hook
-Darning Needle
-Keychain
Feel free to use whatever yarn you like with the corresponding hook size. Larger yarn and hooks may be too big for a keychain. Cotton is most durable, but it’s your craft and your choice :)

Abbreviations:
Ch - chain
st(s) - stitch, stitches
Hdc - half double crochet
BLO - back loop only
FO - Finish off
Whip stitch - weaving closed