Currently there are no sewing needles to be found in the UnReal World, but as we're currently working with the improved and pausable clothmaking you'll be able find them in the upcoming patch.
Sewing needles are naturally needed in clothmaking and the player character will be able to craft ones from bone by themselves, or order iron sewing needles from the village blacksmiths. That's what our test character
Liisi is about to do in the following screenshot.

Coming up with all the planned improvements regarding clothmaking will be accomplished step by step within a course of several versions. We're trying pick up the pace with releasing the next version in order to also overcome some nasty bugs found in the current version. Aiming for an October release.
We won't yet see a designated clothmaking skill or pausable clothmaking in the next version, but smaller improvements and groundwork here and there to preceed the bigger changes.
One new thing to expect is a nested menu for making clothes. Upon selecting [C]lothes option from [M]ake you will now enter a sub-menu with three categories; fur clothes, leather clothes and miscellanous clothes. This menu will get updated with woollen and textile clothing somewhere in the future then.

Clothmaking improvements to be continued, stay tuned...