I’m not one for gritty or older-skewering reboots, but a proper Blue’s Clues detective movie would be a ton of fun. It’d still be aimed at kids, albeit slightly older kids. (like the Dora movie beforehand) So many of the staples of Blue’s Clues would adapt well to a silly whodunnit story - Blue’s non-verbal communication, the skidoo, anonymous letters, so on.