How can I strengthen my grip and fingers?

They make finger strengthing exercise machines. Its a fairly simple design. Two handles and a spring in the middle. That’s it. Sorry I cant get you a link to find some. Just google it and you’ll know what I mean.

Randy is right. Visit a shop that sells guitars. They also have ones that have springs for each finger.

ive used this stuff called power putty to strengthen my hands for climbing, its basically really stiff silly putty but it works really well. they sell it at REI but you can probably find it elsewhere for cheaper.