Box Generators - Lots of them

• Boxes.PY - https://www.festi.info/boxes.py/ An Online Box Generator, but with Tons of different types.
• MakerCase - http://www.makercase.com/ - Simple Box Generator
• Flexy Box - https://www.thingiverse.com/thing:17240 - Actual code that you could modify to make your own parametric Boxes
• Box Site from CHATLabs in Chattanooga - http://jeromeleary.com/laser/ - Shows you the layout as you make changes
• Kerf Cuts - https://nyclasercut.com/getting-started-laser-cutting/kerfs-and-laser-thickness%C2%AD/ - Ways to check the Kerf of your cuts
• More Kerf Info - http://www.cutlasercut.com/resources/tips-and-advice/what-is-laser-kerf 
• Tons of vector art and laser projects - https://www.freepatternsarea.com/
• More tons of stuff - https://3axis.co/
• And yet more - https://www.ameede.net/

Supplies

• https://www.canalplastic.com
• https://www.tapplastics.com
• https://www.peigenesis.com/
• https://www.inventables.com/categories/materials/acrylic
• http://www.precisioncrystal.com/catalog/products/optical-crystal-flat.html

Tips and Tricks

• http://support.epiloglaser.com/article/8205/30190/easily-remove-engraving-residue-from-wood - Remove Residue
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• Anyone cutting thick acrylic...this is a must watch video!  Very informative...Beam Drag and Flame Polishing.