Hi, I'm a material engineering student and I have a SolidWorks project.

My project is a card-sized, pocket multi-tool. I know a there are a few similar tools and I'm making a better one.

I'm taking the most useable tools and combining them togather in one tool that will be small, light, strong and useful.

I need some ideas of small tools I can add to my project.

so far I have:

1. bottle opener

2. can opener

3. a small knife

4. a wrench

Is there a way to ass more tools in order to better utilize the space of the card?