I came across this gold hair tie quite long ago on tumblr. And I thought it was actually a hair piece. Search for it super long... And came to a conclusion that the only way you can get your hands on these is to head to your nearest home improvement stores to get.... wait for it.. Piping pieces!!!
Here's the website on how it's done.
Maybe I didnt search hard enough, maybe there is a fashion shop selling these hair ties. Hopefully its out in the market soon.. and hopefully it's cheap! (Yes, just me being me!)