Usually, a makiwara is a stationary thing. However, a little bit of ingenuity and robe can turn a regular punching pad into an efficient and mobile makiwara solution. The advantage is that a training partner can hold the makiwara and constantly change angles, resistance, distance etc. Thus, makiwara training becomes more flexible and exciting.
How such a solution could look like can be seen in the following video by Dojo Takahashi Kazuo.