Scott has this habit too. He always likes to be holding Bethany's hand. It doesn't matter if she's in her carseat, her jumparoo or asleep in bed, he likes to hold her hand. Its very cute.
Other fun habits that they'd be embarrassed if they knew I shared:
1. They are habitual about when they poop. Scott is a morning pooper and boy am I dissapointed when I don't get him to daycare in time :) Bethany likes to poop when she's in her high chair at the supper table. Its lovely to be chewing on a piece of meat and hear her passing gas, grunting and pushing it out
2. Bethany likes to grab at her genital area when her diaper comes off. Makes for a lot of fun when I'm trying to apply diaper rash cream!
3. Scott will avoid the "big boy potty" at all costs, even if a fresh cookie or dish of change (he loves both) are placed in front of him.