Yes, there are many artifacts and archaeological collections from Cahokia that can be seen or searched online.
The Cahokia Mounds State Historic Site has a website with a collection of images of artifacts from the site. The site also has a searchable database of artifacts, which can be used to find specific items or to learn more about the different types of artifacts that have been found at Cahokia.
The Illinois State Museum also has a collection of artifacts from Cahokia. The museum's website has a searchable database of artifacts, which can be used to find specific items or to learn more about the different types of artifacts that have been found at Cahokia.
The University of Illinois at Urbana-Champaign also has a collection of artifacts from Cahokia. The university's website has a searchable database of artifacts, which can be used to find specific items or to learn more about the different types of artifacts that have been found at Cahokia.