I never hide anything from him - however I don't "share" everything either. LOL
He is well aware of my machines and stash plus I rent a studio for my quilting frame, etc.
When I started quilting a few years ago, he went to the local quilt shop and picked out cute scissors and books for me. A few times for birthday gifts, he has gone back there and picked out fabric for quilts. The shop owner said he picked out the fabrics himself - just needed help on figuring out how much to buy of each one. I'm currently working on one collection of fabric he bought.