ULPT How to take the documents from Client VDI to personal use

So I have a few documents of design and architecture of cloud solutions which are implemented in clients system which are really rare in the market...

Our contract is going to end.

Now I need those docs, few designs any way how to take those documents without getting caught?

Possibilities:

1. Login gmail and upload in mail - high risk

2. Minimize VDI and take a screenshot of all - low risk but it takes a long time

If you guys have any ideas please share.

(I know it's not legal but it will help in future and those are not open source also not available on the internet that's why I am trying this)