It's funny you mention picking up pennies from the ground. Years ago, a man explained something to me about this very thing. We both agreed that a single penny had very little monetary worth or buying power. However, he believed that the act of paying attention to the penny, and picking it up, was sending a 'message to the universe', so to speak. And that message was ' I value money, I value what the universe sends me, send me more!' In other words, by picking it up, you create a wealth and abundance mindset.

Ignoring the penny and walking past it sends another signal - I don't care about money - no need to send it to me.

That was how he saw it. Nowadays, I pick up pennies.