Bonding with my future step son

I think the title says it all.

My fiancé has a 13 year old son and I’d really like to take the three of us out. I know I’ll never replace his mom, but I don’t want to be the evil step mom as portrayed in movies and I want him to know that I can love and care for him despite him not being my own.

Now my question is what is there to do??

I’ve planned on taking him to an arcade, and maybe like a burger place or a Buffalo Wild Wings. But what else?? I feel like that’s enough for just one weekend but I really want to make him feel special and a part of this new family.