Next time you're on vacation and go to Universal Studios, or a similar "studio" theme park, look in the gift shops for a full-size clapper board. Very cheap compared to the real one. It will say "Universal" at the top but you can cover that with masking tape. Don't laugh--that's the one I'm using now for a LOW-budget feature...
Okay, along the same lines, what is the little lens that ya use to set up a shot called ? Sometimes worn around the neck on a string. Looks kinda like a mini telescope ? Actualy, here's a pic of what I'm talking about :
PhilipnCT, one problem with the camera flash method is that you don't get an audio cue. The idea with the clapper is that you get an audio and a video event that can be used for syncing. If you have just the flash then you are counting on the audio and video already being in sync. True, this is probably a good assumption for each DV cam. But, it doesn't help if you're trying to sync up an audio only recording (such as from the stage mixer) with the DV material.
Where the flash method is useful is where there is no way to get the clapper in shot from all the cameras, say a multi camera shoot at a sporting event.
ANother good trick is to get the date and time in sync on all your cameras.
Definately not, but it's better than having nothing to start with. You should be able to get it within a second or two and then sync it up from there, if its a multicamera shoot it can save a lot of time trying to work out what's what.
I've also found keeping World Time set correctly a big help when traveling a lot on holidays. Just knowing what the local time was for the shot and matching that up with my diary entries helped to remember what the shot(s) were of.