We're looking for investors with 'pockets' that are deep enough to pay for the project. [=investors with enough money to pay for the project]
People 'vote their pocketbooks'. [=people vote according to how a candidate or issue will affect their financial situation]
It turned out that they had 'pocketed' [='stolen'] most of the money that was supposed to go to victims of the fire.
(..) There you go. See you, kid. This is from me to you. There you go, bud. Got that with all my pocket money. Enjoy. Aw, Perry, man! What's up, man? It's an orca. Awesome! Definitely awesome, man. (..)1993 Free Willy
(..) Had this mitt ever since I was in eighth grade. We used to sit around and...Spit in it, Smack it... Get a nice pocket there. Look at that. Pretty nice, huh? Let's play. So, how much they payin' you to be my jailer? (..)1993 Free Willy