This is the base file I am using to create add-ons for the new portable version of CRASH space's Store Front Music we did last year. It is a 12x12 grid of quarter inch holes labeled Cartesian style with 0 in the middle. It is going to save me a "hole" bunch of time (sorry), hopefully it will save someone else time, too.
OPTION 1: Download file, use it to do layouts of items that need to have peg board spaced holes. Delete holes you don't need when done with your layout. Cut or drill as your project/tools you've got calls for.
OPTION 2: Download file, open it, copy the holes to make the dimensions of the pegboard you need (up to 11 x 23 is you are epilog laser cutting ). Laser cut your new pegboard. Or print out, tape, drill, if you are more patient than me!