A circular saw is great for on the spot cutting. You need a good sized work table. Chisels, a rasp, a sanding block and papers. Steel wool - planer - keyhole saw - hacksaw - small hand saw - punch - socket set - allen wrenches - clamps - an "L" - 2 retractable measuring tapes - yard stick - chalk plum - pencils - scrapers - brushes - tack cloths - screwdrivers - vise - wood putty - wood glue - rubber cement - you sure you want to do this :) Compressor is nice - staple gun - hot glue gun - brads - (beer) 2 sized levels - a wonder bar ( not bra) shop vac ( use your wife's she will kill you) a dust pan and brush, a scrap box, a small tool belt, work gloves 2 sets, safety glasses x2, tin snips, utility scissors, box cutter, tape (duct, masking, clear ) a degree in engineering and a psychiatrist.
I'm sure I'm forgetting important stuff like fine scrapers 12-inch ruler, and protractors, pliers mouse sander and belt sander and heat gun but that will get you started.
Seriously a small compressor is great for everything from nailing to scaring the dog to power washing the drive way to painting your creations, quick drying something inflating the kiddy pool and your tires.
Silly as it sounds all this stuff is very expensive and can literally cost thousands by the time your done.. Hit garage sales and thrift stores for tools that are still perfect.