I made three feather boards out of a $3 plastic cutting board.
Its very practical.

【Plan List】
jsk-koubou.stores.jp/

[JIG]
・​Extendable Circle Cutting Router Jig
youtu.be/2mEV75w6_cQ
・Drill stand
youtu.be/n-neSE8mwDg
・Magnet drill stand
youtu.be/a2kIJDhhZrg
・Belt sander
youtu.be/KaojkUzeEJU
・Making a 2-in-1 Circular Saw Slide Guide (Easy Panel Saw)
youtu.be/M1xYKw5FP-0
・How to make Line laser module
youtu.be/a5QKe4fZszY
・Workbench
youtu.be/cpnR1txnPGM
・Homemade height gauge
youtu.be/qdd8Jtsbbcc
・right angle corner clamp
youtu.be/yGoMIY325NM