The Linzi Ancient Chinese Vehicle Museum is a niche museum, but a good one if you are in Zibo for Qi history. It focuses on ancient carts and chariots, including displays connected to excavated horse-and-chariot pits from the Spring and Autumn period.
The museum is out in Linzi District rather than central Zibo, so it works best alongside other Qi-related sights. It is not for everyone, but travelers interested in archaeology get a more specific story here than in a general city museum.