Here are some tool number icons!  16x16, just like the voxel resolution!

![numicon-0](https://f.cloud.github.com/assets/542863/1143001/151f07e0-1d0f-11e3-86b5-3a484863c413.gif)
![numicon-1](https://f.cloud.github.com/assets/542863/1143002/1539ace4-1d0f-11e3-918b-c0363849f380.gif)
![numicon-2](https://f.cloud.github.com/assets/542863/1143003/1542a2d6-1d0f-11e3-9328-a900fcca72c7.gif)
![numicon-3](https://f.cloud.github.com/assets/542863/1143004/15402d80-1d0f-11e3-97d7-1208078ab0ff.gif)
![numicon-4](https://f.cloud.github.com/assets/542863/1143005/154279c8-1d0f-11e3-9280-00c88b1fd43b.gif)
![numicon-5](https://f.cloud.github.com/assets/542863/1143006/15492692-1d0f-11e3-8425-08e10dcf86c4.gif)
![numicon-6](https://f.cloud.github.com/assets/542863/1143007/15453e1a-1d0f-11e3-9e4f-11ee01f416ed.gif)
![numicon-7](https://f.cloud.github.com/assets/542863/1143008/15498b00-1d0f-11e3-835f-bcd35e30ae9f.gif)
![numicon-8](https://f.cloud.github.com/assets/542863/1143009/1553bada-1d0f-11e3-83d2-996c583d4585.gif)
![numicon-9](https://f.cloud.github.com/assets/542863/1143010/1555302c-1d0f-11e3-9e3a-10c5473a64e0.gif)