I know there are a bunch of Thanksgiving dinner planners on TpT, but I like to use our local grocery store's ad. Much more real life.
The students are given a sheet I made on Docs that lists things from the ad. They are required to figure out how much of the item is needed and the total cost.
They are broken up into groups of three and the fun begins! This activity takes around an hour and everyone is always on task.
That is it! Super simple and free!