@KorvinStarmast @goodguy5 @Ben Do you mind a somewhat goofy tone? It may be difficult to play a serious or edgy character (with the exception of comically dramatic characters) with that style.
I'm brainstorming with a non-chatizen friend who has more DM experience than I do. We heavily considered the premise of "the PCs need to bake a birthday cake" before coming up with something better
@goodguy5 It's a one-shot. Pick 1 race, 1 background, standard ability score array. Pick 2 classes, level 4 in both, no multiclassing. For HD and spellcasting, take the higher of the two class's progressions. For your 4th level, take one ASI and one feat. All books and UA are allowed.