I'm back!
The bag that was shown in some of the replies is correct. The part number is from the 2007 Skidoo catolog which is p/n 280000094. What I found though is when I received the bag it didn't look like the bag that was in the catolog picture. Nevertheless, it still looks fine on the spyder. I had to add some small velcro straps of my own that I had to hold the bag to the bars, otherwise the velcro ties that are on the bag are too short to work on the Spyder. I'm actually thinking of modifying this maybe by adding some velcro pieces on the back of the bag and the handlebar cover to attach the bag to the bars. This way I could eliminate the straps and give it a cleaner look. I'll have to think about that. For now it serves me just fine. I use the bag mainly for my sunglasses and tissues, but there is still room for other small items. This along with the Cortech tank bag gives me plenty of storage compartments that I can reach in front of me. I also have the Cortech sport tail bag as well for extra space when I need it.
The handle bar muffs that some have mentioned are also Skidoo handlebar muffs, I don't have a part number for those though. I used these on a Skidoo snowmobile that I had. They work real good on the Spyder along with my heated grips that I added. They do make a difference on those real cold days that I ride in here in the northeast.
The handlebar muffs, handlebar bag and the cortech tank and tail bag all fit well with the Spyder.