The original version of this model only allowed for the deburring tool but there's tons more room for an xacto / hobby knife.
Although it's a snug fit, it hold both tools and includes spots for knife blades and deburring blades.
I may update the model to give the hobby knife slightly more wiggle room. Leave a comment if you need that an I'll ablige.
Here's a link to the exact tools I used in the bin:
Hobby / Craft Knife - https://www.amazon.com/dp/B0006NAU6A
Deburring Tool - https://www.amazon.com/dp/B0D1BNWJV4
The author remixed this model.
The original version of this model only allowed for the deburring tool but there's tons more room for an xacto / hobby knife.