There are plenty of ways to upgrade your rocket. Cameras, altimeters, flight computers, improved parachutes and many many more choices.
One of the most popular upgrades or optional accessories for your rocket is a altimeter. We have quite a few choices here. Jolly logic altimeters are easy to use and reliable, or if you want to solder up a kit yourself then check out the Eggtimer rocketry kits. Head on over to our altimeter category to browse through the choices.
If you want to take a video from onboard your rocket then a video camera can be worth acquiring. Estes offer the universal AstroCam which can be attached to pretty much any rocket. Here are a selection of video cameras.
A rocket tracker is also an excellent upgrade. Not only will many show you loads of information about your flight but you can also be sure you'll find your rocket again! Many are also coupled with flight computers which can offer plenty of additional functions for your mission. The Fluctus & Steady blue tracker / computer is one of our favourites with an incredible range and loads of features.
If you have a model rocket with a plastic parachute or streamer, you may notice that after a few launches the parachute may be a little worse for wear! Nylon chutes are a great choice for upgrades with this regard. Check out hundreds of parachutes here.
Another interesting product that could be of interest is the Jolly logic chute release. This item lets you open your parachute at a lower altitude rather than at apogee. This means your rocket won't drift nearly as far on it's way down giving you much higher odds of recovery without too long a hike! You may want to couple this with a small drogue parachute and the main to be released at a lower altitude.
There are of course many more options, ideas and choices than this short list! You might want to add a payload section or electronics bay to your rocket.