Uesp does good lists and often have non craftable items in those lists however tracking down some of the utensils that may only be available through random drops/stealing can be difficult.

One trick I use is to search in the "in house crown store" if an item shows up there I then do a TTC search to see if it is available to buy..... ie in an unbound state.

Whilst this won't lead you to trader locations if you are on console it will at least tell you if you have options besides the crown store.

I searched TTC for the Wood Elf spoon you mentioned that does not have an available search so either doesn't exist or is in house vendor only.

The Dawnwood Bone Fork shows up in Uesp's list of Dawnwood Furnishings and says it is available at in house vendor, however it also returns search results on EU TTC so it must drop unbound too.

Good Luck!

Carving Knife, Fork, Knife, Serving Fork, Spoon