None of them are strange, (7)
Something only appears strange if we rarely experience it. If we see something every day, it does not appear to be strange anymore, and what a bummer that would be. Now, go listen to "People Are Strange" by The Doors.
With socks of laceAnd beaded ceintures. (8-9)
These accessories are garish and gaudy. Anyone who wore them to bed would appear strange. And probably more than a little uncomfortable. Fierce, but uncomfortable.
Only, here and there, an old sailor,Drunk and asleep in his boots, (12-13)
The sailor's drunken and messy appearance makes us think that he has had a hard, but possibly enriching, life. He's had some fun, and that makes for fun dreams.