you could do science and math fabrics and then intersperse robots from popular culture like C3PO and R2D2 from Star Wars for example, Data from Star Trek is another one. CaliQuiltCo on Etsy (formerly Stitch Stash Diva) has a great science fabric collection. Been married to an engineer for a long time and he loves popular culture, working on a Star Wars/Star Trek/Dr Who quilt for him and I'm using fabric with physics equations as my back and binding and as a more low volume fabric in the quilt