Make an Ajdustable Router Jig for Squares | Adjustable Router Template Guide - YouTube
TrueChannel Binding Router Jig - StewMac
RTJ400 jig is affordable and makes dovetails on a router table.
Circle Jig Complete (all you'll need to make circles from 6″ – 48″+) – Micro Fence
4 Simple, Shop-Made Router Jigs | Popular Woodworking
Rockler Router Fluting Jig | Rockler Woodworking and Hardware
Circle Cutter Router Jig – Router Circle Cutting Jig Cuts Perfect Circles from 10” to 52” D - Circle Cutting Jig Includes Two Center Pivot Pins - Circle Cutting Tool Fits Most