I use 7/8" wide ribbon for my key fobs - you can find that most anywhere. The webbing & hardware come from MamaSheCrazy which is on Etsy & also a website of the same name. AllIslandWebbing is the same company too and has wholesale prices.
I cut my ribbon in 12" lengths which makes for a nice wide wristlet, but go with whatever size you like best!
Cut fusible stabilizer in the same length and a little over 1/2" wide, you want to make sure you don't extend out past the edge of the ribbon. Iron it onto the backside of the ribbon. You can use any kind of fusible - tear away or cutaway.
Hoop Sticky Tear Stabilizer and embroider placement lines. You can find a free download with various size placement lines from Embroidery Garden or just put straight lines about .75" apart. These are a guideline for where to put the ribbon and also helps with centering your lettering.
Peel back the paper between your lines where the ribbon should go.
Fold the ribbon in half and then place it on the sticky.
Open it up and place back on your machine. Be careful not to bump the ribbon while putting it back on the machine or they'll be crooked. You could also put a pin on either end for more security but I find it's not necessary.
Here's the final product! I'm sorry I don't have the pictures between hooping and final product, my kids distracted me while I was working on these and I failed to get the rest of the pictures. For now, this post is just on how to hoop the ribbons to stabilize them for the embroidery. I promise to come back and make this a full fledged how to make a key fob post!