Here are a bunch of tools I find useful. I do not sell them myself but I link to places that do.
3M Spray Adhesive

Bonds Many Foils, Plastics, Papers, Foams, Metals and Cardboard, Low Mist Formula, Heat Resistant Adhesives Up To 110 Degrees Fahrenheit, Fast Aggressive Tack With Shear Strength Up To 160 PSI
3.99
Buy
This works great for sticking sandpaper to glass for sharpening.
Very useful for other bonding too.
Very useful for other bonding too.
Rasps

30-75
BuyMarking Gauge – Wheel

16.98
BuyWooden Mallet

$30.25
Buy3-in-1 Oil

under $10
BuyWood Threading

This threadbox and tap, for cutting external and internal threads in wood, is useful for making clamps, jigs, fixtures, knockdown furniture, toys, and novelties. Although traditional in design, modern technology and metallurgical advances have improved the traditional threadbox and tap and perfected its components.
* Hardwood threadbox with turned handles has an aluminum insert to prevent wear and extend the tool life.
* Steel tap is machined to close tolerances and designed to allow easy chip clearance.
* The resulting wood thread is both tight fitting and strong.
* Available in five sizes.
* Includes threadbox, regular tap and instructions.
Bottoming Taps are for cutting threads to the bottom of a blind hole. Use them after a regular tap has gone as far as it can in your hole. (Bottoming taps sold separately.)
47
BuyCombination Square

$8 and up.
Buy
I have a six inch, a twelve inch and a 16 inch combination square. I use them for every project. Starrett are of course the best, but the Emprie brand is more affordable without sacrificing quality and Empire has a lifetime warranty and is made in America.
Strap Pull

1-Ton Capacity, Professional Grade Power Pull, Maximum Lift 12', 2 To 1 Safety Factor, Features Precision-Cast Aluminum Alloy Ratchet Wheel, 1 Piece Construction, 3/16" Galvanized, Aircraft Quality Cable, Interlocking Precision Fit, Steel Alloy Pawls With Safety Spacer Sleeve, Cold Rolled, High Strength, Tempered Steel Frame & Handle, Drop Forged Steel Slip Hooks With OSHA Recommended Safety Latches, Heavy Gauge Steel, Reinforced Ratchet Guard, Aircraft Type, Heat Treated Bolts, High Tensile, Fully Rotating Steel Swivel, Trouble Free, "Notch-At-A-Time" Letdown, Permanent, Comfortable, Non-Slip Grip, Pow'R Pulls Are Used To Lift, Pull, Stretch, Or Tighten.
$31.96
BuyF-Clamps by Bessey

$11 and up
Buy3/4″ pipe clamp

16+
BuyTimberframing Chisels

I find the 1 and a half inch width useful for those times when the 2" mortise was just too big.
$129
BuyA Timber Framer’s Workshop: Joinery, Design & Construction of Traditional Timber Frames

$31.64
Buy
Has some great 3-d renderings of common joints. Gets into a little more of the physics of the wood and the joints.
Building the Timber Frame House by Tedd Benson

$17.15
Buy1/2″ 18V Lithium Drill – Makita BDF452HW

* Compact, ergonomic design; only 8-Inch long and weighs just 3.5-Pound
* Built-in L.E.D. light illuminates the work area
* Makita LXT lithium-ion battery and energy star rated 15-Minute rapid optimum charger produces 430-Percent total lifetime work with 2.5X more cycles
* 3-Year warranty on tool; 1-Year warranty on battery and charger
$125
Buy
I own this drill and am very pleased with it. It is comfortable to use, has plenty of power and was the Fine Woodworking's top pick for 18V Cordless Drill's for both 2008 and 2009.
1/2″ Drill – Dewalt Heavy Duty

$95
Buy
A very heavy duty drill that works great for drilling tapcon holes in concrete and other drilling jobs.
Portable Drill Press Guide

You can drill any fixed angle from 45° to 90° and this jig allows you to drill round stock on center by using the integral Vee guides. Center edge drilling by using the anchor pins in the base for fences. Don't be limited by extra wide stock that won't fit your drill press, just chuck your electric drill to the 3/8" spindle to operate. A depth stop is provided for accurate boring and countersinking. Includes a three jaw 0-3/8" geared chuck.
$53.59
Buy
Handy for drilling straight or angled holes in a controlled manner.
Forstner Bit Extensions

$6.99
Buy
I find both the 4" and the 10" are extremely handy.
16″ Circular Saw – Makita

16-5/16" Circular Saw With Electric Brake, Large Capacity For Beam & Timber Cutting, Blade Cuts 6-1/4" At 90 Degrees & 4-3/16" At 45 Degrees, Weighs Only 28.7 LBS For Ease Of Operation, Electric Brake For Maximum Productivity, Powerful Motor Delivers 1,800 Maximum Watts Out, Low Noise At Only 87db, Includes: Carbide Tipped Blade & Rip Fence.
A must have for large scale timberframing.
$722.56
BuyBroad Axe – Ox-Head

The head is 2.2 lb with a 5-1/2" cutting edge and the handle is 15-3/4" long.
$94.99
Buyrouter: 1/2″ straight bit

$15 and up
Buy