Maybe leaving your boots out for the spirits weren't a part of pagan Yule celebrations, but it does sound shockingly similar to the ritual my German-American family still participates in every year of leaving your shoes out for St Nicholas:
http://www.wf-f.org/st.nicholas.html
I'm a grown up and I still insist that there has to be candy in my shoes on December 6th. (But I'm with Tryggvy, please leave the honeycomb out...)
Did this mostly modern tradition inspire the bunk?
That was an awesome medieval or bunk. I'm still laughing at Oath Pig.