There are a few options, usualkly boutique outfits, eg
http://www.zazzle.co.nz/design_your_own_create_your_own_custom_gift_tie-151366525491265809 from down under.
They can print on anything now, including cakes and canvas.
For those puzzled by this discussion:
https://en.wikipedia.org/wiki/Necktie
Although I admit it does not explain WHY we need Moodle ties.
-Derek