OK. There might be a few of us out here who are wondering just where the heck you buy a rubber bokken. And why.
I wondered if someone would ask.
Okay, so strictly speaking, it's a rubber covered bokken. But the wooden core is so flimsy that it would break (actually shattter) if you actually hit anyone with it. Or anything, for that matter. I know this because my son decided to whack the mat with one not a week after I'd bought them.
I bought them, originally, so my junior students could work with bokkens without danger of damaging each other. They actually are great for this. One bit of good news is that when they break they can be repaired such that they remain adequate for the sort of practice for which they are actually designed. The would tends to split on grain lines, so it's really like putting a jigsaw puzzle together with glue.
I got them from Tigerclaw.com, but I can't find them on the retail store and I don't have my wholesale login anymore.
I also have a couple of foam rubber "bokkens" that I used to use to chase the kids. The idea was they were supposed to react in a correctly martial way. Getting out of the way, taking it away from me, etc. If they didn't, I whacked them with it. It did no damage, didn't even really hurt, but they couldn't claim they didn't get hit.
As for the bokken in my office, I spend a lot of time watching tests run. It's a little like watching grass grow. I need something to keep my hands occupied and the bokken is better than the bag of candy.