I'm a mom, but my DH loved baby-wearing and co-sleeping. If he's open to it, you could pick out a sling/wrap/whatever together. I purposely bought very nuetral colors so that DH would be comfortable in it. He would start baby-wearing as soon as he got home from work. He also enjoyed getting them to sleep in the sling, and often he would just wear them there all night during the first few months. I think the biggest things for him were the close contact of baby-wearing and also that I just made sure that he knew that other than nursing, everything was a shared task. Not that I made him do everything, but nothing was off-limits- he learned to bathe them, put them to sleep, carry them, etc. as well as I did. We looked at it from the perspective that our kids were both of our responsibilities equally, and we felt like we were learning how to parent and bond with them together equally.
DH seemed to bond with my firstborn DD really quickly, before we left the birth center. He got to hold her first because I had some blood loss, so that helped. With my DS he seemed more tentative, and I was worried during the first day, but that night (at home, I had them at a birth center where you go home the same day), I went to sleep before the baby and at one point woke up because I heard him crying. When I came out of my room DH was smiling at him and stroking him and calling him a newly made-up nickname, so I knew that holding him in the sling and feeling DS breathing against him and all that is what it took for him. My kids are 3 and almost 2 now, and he is as close with them as I am.
Hope that helps.