This time I have to say it.  I chased a random clunk/rattle, ‘like a wrench left in a cavity’ or like a sizable stone have gotten caught somewhere that rattled occasionally.  You said not suspension, but … mine was a loose right front shock mount.  Everything was in place, but there was no nut on the top.

From: Alistair Bell
Sent: Wednesday, April 14, 2021 6:42 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Another thing I didn’t know about my van

It’s close to that point now Mark.

It’s a funny kinda rattle, clunking. It’s really becoming a moby dick thing with me :-)

>> Partly because I needed too, and partly because I have this rattle or light clunking noise at times.
>> 
>> It’s not, I think , suspension components, but something else... like a wrench left in a cavity :-)
>>