These are the different shuttles I've collected over the years.
Copper shuttles purchased from The Knotted Vine on Etsy.
Wooden shuttles from Veronica in Russian.
Generic shuttle bought off Amazon
These shuttles are all from Rita Richmond, Shuttle by Design. Some wood, some acrylic, some shell/wood/acrylic blend.
Commemorative Shuttle from Ice Drops Addicts group on Facebook.
Commemorative shuttle from Tatting Shuttle Addicts group on Facebook.
Metal post shuttle from Poland.
Hand carved shuttle made for trade from co-worker's son.
Shuttles made out of clear ornament ball and a large clear bobbin.
When I began tatting, my first pair of shuttles were these metal Susan Bates bobbin shuttles. I have over a dozen of these since they were all that was available to me at the time.
These two are Just Rite metal shuttles. The one on the left is a bobbin shuttle. The one of right has a twist off blade to expose the post for thread loading.
This was also a Just Rite bobbin shuttle. It didn't survive long. the tip was a very sharp point for picots but ended up shredding the thread more often than not.
This is a metal shuttle from Lacis.com. It measures 3 inches long.
This is made from a very thin nickle-type of metal. It's a replica of ones used in Victorian times. You can tell it's a replica because of the jump ring attached on the end. True shuttles of that time do not have this ring attached. It bends very easily.
This is a SewMate plastic post shuttle. These are my favorite post shuttles so far.
This is a black celluloid, early plastic, post shuttle. Purchased it on Ebay along with a few other shuttles. The tips don't touch on the right side anymore. For the collection only.
The top blue one is a Tatsy post shuttle. It's rather huge but perfect for larger threads like size 10 crochet thread. I also have a yellow one to complete a matched pair. The smaller green one is a Clover post shuttle. These I have a dozen of in multiple colors. I always buy them in packs of 2 or more. These replaced the metal shuttles at my local craft store.
These are all made of clay. I have two of the green patterned one. Purchased on Etsy from Heather. I also have one with a cat face on it currently being used.
This is one of my first wooden shuttles. Not this one but by the maker. This is a Shuttle Shop Shuttle. The first one I bought was a biggie with a celtic knot in the center. 
These are wooden Pop-A-Bobbin shuttles. Top one is Ash wood and the bottom Cherry wood. These have become my all time favorite bobbin shuttles. Purchased from Jane on Etsy.
The wooden flat shuttles were carved out by my brother. I call them my Teaching Shuttles because I give them away to people when I teach them to tat.
This is my GR8 shuttle by the Shuttle Brothers. It's also a bobbin shuttle, this one is made from resin.
This is made from Buffalo Horn. I have 2 of them. Purchased from Lacis.com. The shuttles are very smooth and a delight to hold. Although because of the smoothness, they sometimes fly away from me when I tat too fast.
These are Starlit and Aerolit Shuttles available from HandyHands Tatting. I cut off the long pick on the end. They hold a lot of size 20 and 40 thread and a whole ball of size 80.
These tiny shuttles were purchased on Ebay from OldTymeAntiques. They also have and Etsy page where you can get more wood shuttles. This double bobbin shuttle is also from this shop.
This is a decorated Prym shuttle purchased on Etsy. The two halves separate so you can wind your thread.
This is an Abalone shell shuttle given to me by my husband. It was found in an antique shop. It's a lot heavier than you would suspect for being shell.
Black Hero post shuttle and a no label black plastic/celluloid shuttle. These were purchased on Ebay.
Second of the shuttles I created. Also made of resin with iridescence flakes to make it 'sparkly'.
This is the first shuttle I made myself. It is made with UV Epoxy.