https://wiki.guildwars2.com/wiki/Festive_Bag_of_Materials
On a whim I picked up 415 of these, so the sample is small but the results are very telling.
249 green wood logs
212 soft wood logs
189 seasoned wood logs
93 hard wood logs
46 elder wood logs
268 jute scraps
222 wool scraps
135 cotton scraps
108 linen scraps
2 silk scraps
40 lumps of coal
138 piles of flax seed.
Really shows just how low the chance is for silk. Heck the wiki doesn’t even list it.
And since when is coal and flax seed “cloth and logs”?
Not that I expect Anet to actually do anything, but figure some people out there may be curious.