SWIM just did what he is guessing 5mg. He needs a new scale but it was a very small amount in a VaporGenie. He didn't break through, but it was a very nice, pleasant sub-breakthrough experience where he did see images of the elves doing funny things like spinning around like a record. There were some somewhat dim geometric shapes, and he could feel himself in this world and in the experience simultaneously.
He wanted to try such a small amount and was surprised even that little bit had a very good effect. The afterglow was a lot more obvious with the smaller amount, as larger breakthroughs leave one in awe and still shaking from the power. Sometimes, 5mg or so smoked is just right.