Trader Joe'S Mystery Bags For Sale 2024 For Sale. The mystery bag gift set / pack is a holiday seasonal item that includes 3 random reusable trader joe's shopping bags that comes in brown sealed paper wrapping so you don't see. Trader joe’s is once again delighting fans with the return of its $2.99 mystery bag sets, sparking a frenzy among collectors and shoppers alike.

Red & emerald mini insulated bags. What are the trader joe’s mystery bags?