Take your fingers and wrap them around another person. This is called a hug. Just make sure you include all the stuff attached to your fingers, like your hands and arms too, otherwise it's more of a squeeze, and we don't want to do that to people.
だ, かか, いだ
Who do you love to hug the most? Your dad (だ)! He gives the best hugs. They're warm and big and tight and comforting. The kind of hug dads are really good at giving.