“Making bricks without straw” is an expression that comes from The Holy Scriptures. The Israelites needed straw to make bricks. If the Israelites had very little or no straw, they still had to make bricks. If you watch the film The Ten Commandments, you know which scene I’m talking about.
If you ‘make bricks without straw,’ you try to achieve something without resources that are needed to do it. —the free dictionary.