My husband loves sitting and playing at my sewing machine, and gives me great opinions and helpful ideas... but whenever I ask him, he inevitably says "you know I don't really care, right?" I know he'd be happy with whatever I want to do, but I know he cares (at least a little bit) because he'll switch fabrics out when I'm matching/coordinating, or help me arrange what will go next in a scrappy block.
He also wants to make a denim rag quilt (I'm s-l-o-w-l-y working on a back-pocket uilt) for our son to make forts with - sewing pockets onto the corners so it can be weighted and stay on chairs and tables and what-not to hide under.
I find it so stinkin cute that he pushes so hard against doing it with me, but then gets so excited about his own little projects (or making a block for me, since he wanted to play with my new machine too!). One of these days (weeks, months, years?) he'll find himself sewing right along side me!