Is Most Of The Untradeable Item Useless?

It's kind an annoying thing that my freaking bank is full every single time and I want to make some room out.
I have been keeping plenty of those untradeable item.
like this:

this:

and this:

Are those untradeable item totally useless after obtained from the quest,except wearing(and I won't wear it,mostly)?
I want to throw those garbage all away.

p.s. I know just few of the untradeable item have some usage,like the creeper mask.
p.p.s. Creeper are cute~

Thx~~

 

most dont but some are super good. Usually the low level ones are thrown out
but the high level ones. Keep those

 

You can throw out any untradable armor/items that you don't have any use for. If you're level 20 you probably don't need the potion making reward anymore. If you plan on not using them, just throw it out.

And, as @SizzlingBot S-32 said, the higher level untradable items can be good for end game builds, so hold on to those when you get them. The lower level rewards aren't great and usually are thrown out fairly soon after doing the quest.

 

Untradeable items can be used for builds. So it depends on the build you are using

 

Some untradable items could be really good actually...
Most of the Hive items for example are really really good.
Some untradable items are even "Meta" items (Best in-game in a certain category) such as Giant's Ring.
But I'd recommend to just throw away all the low-level untradeable items you get.

 

are u a sheep? i want ur wool kthxbai