This is a fun activity from HistoryChic's Treasure Trove that you can use in AP World History Unit 3 to help students review the major trade routes and products (you do need to have covered this material before doing this activity). You can use it as something fun that isn't graded, or you could use it as a group assessment. It can also fit well later in the year if you want a good half hour review activity.
The directions for students are included on the second page. You can show this PDF over a projector like you would a PowerPoint or Keynote presentation, or you can print out one copy for each group (in which case you could omit page 3).
You will want to break your class into groups for this activity (I find that groups of 3-5 work best), and make sure that each group selects a secretary to be in charge of recording their answers. You can decide whether or not to allow students the use of laptops, notes, and their textbook during this activity, based upon your aims. The activity will probably work best if you do allow them access at least to maps.
There are three ways to conclude this activity. If you want it to fit into half an hour, collect the answers from each group at the end. However, if you want students to get more out of it, I recommend spending a bit longer and using one of the other two ways to conclude it. If you want to fit this into 35-40 minutes, go through the slides again with students at the end, inviting 1-2 groups to share (or perhaps shout out) what their group came up with for each scenario. If you can afford to spend longer than 40 minutes on this, you might regroup the students into new teams that have one member from each of the original groups. Have them go through the slides together and discuss/critique what their original groups came up with.
For grading, I recommend leaving this ungraded if you do it as an activity, or perhaps only do a participation grade. This makes students more willing to take risks with their answers, and eliminates pressure so that they can have more fun thinking critically. If you decide to use this as a group assessment, I recommend giving a grade based 50% on the individual's participation as witnessed by you and 50% on the plausibility of the answer the group came up with for each scenario.