I had this Profile Design Aero Water bottle last season, but this season, I finally took the time to add in the adjustable mounting for a bike computer. What this means is I can click my Garmin 920 into the water bottle mount (with the aid of the quick release feature) and be able to see all my stats in real time without taking my eyes off the road or hands off of the shifters. Very important for less-than-ideal cyclists like me.
Oh, I've had a tune up and washed my bike multiple times, but that Ironman Wisconsin sticker is staying until the next one.
Anyhow, the next upgrade I made was swapping out my cheapo canvas bento box for a more substantial version. This aero model is quite similar - the main feature of this that I appreciate is that it keeps its shape, so my leg isn't scraping against it. It's also easy to grab from on the ride and big enough to hold three or four gels, which is plenty for most rides.
Finally, this race number holder is pretty great. I'm sure there's a way to rig together something out of parts most households have lying around, but I'm not that handy. I realized I needed something like this after Ironman Wisconsin. Most triathlons require you to affix at least one race number label to your bike. The stem left under my seat isn't tall enough for anything, which leaves the tube between my knees ... and also meant my legs brushed against it for 112 miles. Not fun. So this gets my race number behind me and clearly visible. Thanks for this awesome Christmas present, Mom!