Splinter's cane is a walking stick that Splinter uses for his own needs, such as making it easier to walk (because of his age). It appears to be made of a green translucent crystal. Not much is known about it, but there are rumors that it may be crystallized Ooze or some kind of green stone. This has not been confirmed, however.
This is a perfect weapon for Spinter as his previous incarnations have used a cane in battle. The cane is also strong for offense and defense, representing Splinter's balanced personality. It is revealed to conceal a sword blade in "Vengeance Is Mine".