My son Owen and I play a 28mm-scale tabletop wargame called Warhammer 40,000. (Well, to be honest, we mostly just collect the models, customize, and paint them.) I’m currently building my Tyranid army; he’s mostly into Orks.
You can see how many simultaneous projects I have going (just for my ‘Nids, I might add) by taking a look at my oh-so-tidy craft space: