Installation

In Blender open Edit, Preferences, Get Extensions, then use Install from Disk and pick the tool_generator zip.

Usage

1. Open the Tools tab in the 3D viewport sidebar (N). Pick a kind (Wrenches, Screwdrivers, Pliers & Cutters, Hammers, Saws & Bars, Measure & Clamp, Power Tools, Site & Garage).
2. Browse the designs with the arrows or click the picture for the whole gallery, then press Add Tool. Add All as a Set lays out every design of that kind in a row. You can also use Shift+A, Mesh, Tool.
3. Select a tool to edit it: the card at the top changes the design, Surprise and Same Kind pick a random one. Type switches the tool type, Shape holds its sizes and options, Look sets the steel finish, colors and wood.
4. Condition makes it Brand New, Used or Old; Variation changes where the wear lands.
5. Detail and Export sets the mesh detail. Make Plain keeps the tool as an ordinary mesh; Delete removes it.