[mirimir]

In my experience, Aikido includes many practical bits of Japanese swordsmanship. Practitioners (especially Iwama style) typically use wooden knives, swords and staffs in practice. Because that helps with proper form. Given that most Aikido moves are based on weapon moves.

[bradknowles]

Advanced Judo is also like that. I've never practiced advanced Judo, but I've seen it played. And I saw them using wooden weapons.

Given that both Judo and Aikido were born from Jiu Jitsu, that makes sense.