I’ve made a deck on Kitsun for ゆるキャン△ - Volume 1 with the vocabulary list from google sheets that the WK Book Club gathered. Will also make a vocabulary deck for the other volumes available in the future 
Link: Kitsun.io (requires being signed in to see it)
Again, it’s tagged by chapters and by weeks (that the book club read), so you can easily follow through with the list. It’s also ordered by appearance in the manga (the index number corresponds to the page number).
Hope it’s useful to someone 