A few handtool suggestions for someone not planning to make a career of building stringed instruments:
A block plane for end grain trimming and a #4 Smoother plane for face thicknessing and smoothing and Shooting Board work. #60 1/2 is a popular block plane and shows up at flea markets and Craigslist frequently for ~$30-60. While you're looking for planes also lookout for wood rasps (old Nicholson #49 and #50 made in USA are the best value), large flat metal bastard and small triangle metal files and a spokeshave. Soak the rasps and files overnight in a cola bath. This will etch the grooves and make it work better than new. Use a glass or Stainless Steel container.
Make a shooting board with 90 and 45 degree fences:
http://www.lie-nielsen.com/content/documents/instructions/L-N_51_Shooting_Board_Info.pdf You will use this for precise and square cuts like where the two sides join each other on the butt. If you want to miter binding/purfling a 45 degree option is helpful.
45 degree acrylic drafting triangle. Larger is better. Extremely accurate and can be dropped w/no change to its squareness. Used for setting up jigs. In most office supply and art supply stores.
http://www.utrechtart.com/C-Thru-45-90-Inking-Triangle-MP-55703-001-i1015591.utrecht
While there get a white lead pencil if you plan to work w/dark woods.
A generic honing guide like this:
http://www.lie-nielsen.com/blade-sharpening/side-clamping-honing-guide/ modified per the video link:
Build this jig for setting blade length to get repeatable angles (ignore the parts about setting up a stone:
http://www.lie-nielsen.com/content/documents/instructions/AngleSettingJig.pdf
Sharpening set-up
Go to the nearest countertop shop and get a Granite or Silestone sink cutout. The smooth side will be your flat reference for multiple processes.
Go to your local automotive paint/body work supply store and get 3 sheets of wet/dry sandpaper in grits:220, 400, 800, 1000, 5000. I like the Japanese Silicone Carbide papers. While there pick up some Scotch/3M 1" green masking tape. This is useful when attaching binding due to its elasticity. You will also need a can of spray contact adhesive. 3M medium(#77?) is what I use to adhere the sandpaper to the granite.
Google Scary Sharp and follow the instructions for your plane irons and chisels until you can cut a piece of copy paper on edge with no effort.
A pocket knife is useful.
A combination and/or a double square. Look for Starrett brand at Flea Markets.
Make clamps out of 1" rings of 3" PVC pipe like this:
http://www.instructables.com/id/Homemade-Clamps-From-Plastic-Pipe/
Diagonal side cutters for trimming frets flush to the edge of the fretboard.
A fret slotting saw. The flush trimming saw from Harbor Freight leaves a .025" kerf. You'll need to make a jig (like a bridge) with a slot in it to keep it accurate. While there grab a small deadblow hammer for setting frets.
A set of welding torch cleaning files from big box home stores for nut slotting.
A small unworn Phillips head screwdriver for tuner mounting screws.
Most of these tools are things you will need as you go through life. I estimate you can get all of this for ~$150.
