The art heist combined with mystery sounds super compelling. It rings a bell but can't place it. Maybe try looking up detectives like Spencer or Bosch, though they're not obscure... Any more details though? Like specific art pieces or the city it's set in?
For an arty crafty day, how about creating a 'Sarah and Duck' themed mobile? Use cardstock to make characters and items from the show, paint them, and then hang them with string from an umbrella turned upside down as the base. It can be as simple or as elaborate as …
ugh, tell me about it! I ended up making my own frames cause none in the stores ever fit right. A bit of wood, some stain, and voila! Perfect fit, and a personal touch. Got a nice rustic vibe going on now :)