A straight router bit can cut out just about any shape you want. All if needs is a little guidance from you.
Guide to Pattern Routing, Router Table, Router Tools
Dovetail jig does an about-face as router guide
Picking Out a Router
How to select and buy router bits
Template Routing Basics: How to Easily Cut Repeatable Parts
With this template set, signs from 4 to 12 high and up to 36 long are easily made. The system includes two sets each of 1 1/2 high and 2 1/2 high
Router Letter Template Set
Thwart router-bit tear-out
Dovetail jig does an about-face as router guide
Tool review: Do-it-all Routers
[Size]: The set includes R5, R10, R15, R20, R25, R30, R35, and R40 type corner radius quick clamps, 8 radius angle options. [Professional woodworking
Radius Jig Router Templates Corner Radius Routing Templates, ABS+CNC high Hardness Processing Glue, Routing Rounded Corners Router Bit Templates, R5
Picking Out a Router
Make jigs for template routing
Simple router bit storage anyone can tackle