Well, here's my latest few... Coming from Chessie to Europa for the fest, I carried items for myself and two others. Meadbh and Jack have already posted, I believe - 4 items between them went unvendorable. I've just found my first; a 14th anniversary ticket. So so far that's 5 items, using a standard transfer token (not shield), with a maxed out load. At least 2 of those I personally carried for these people, across several trips from their originating shards. I also just finished a series of 57 other shard transfers, all maxed, all with regular tokens, all either received as gifts or bought from vendors. God know how many more problem items are hidden in there just waiting to not go on a vendor.
Brian