I second Brian's answer by saying that making your own character sheets and power cards is very helpful.
Personally, I combined them into one and created an excel spreadsheet for my character info and my powers. While the up-front work is significant, it's worth it if you are sticking with a single character for any amount of time.
The spreadsheet is awesome for a number of reasons:
- You can insert comments on skills, powers, etc for special conditions (e.g. "Assassin's Cloak - Roll twice for all stealth checks)
- You can use formulas for everything.
- Level automatically increases when you reach the required amount of EXP
- Skills are automatically calculated by level and ability score
- Damage and to-hit formula changes based on conditions (the checkboxes in the screenshot)
- You can create macros to do certain common actions (healing surge, short rest, extended rest, etc)
Note - if you don't want to have a laptop in front of you, this still looks beautiful printed out on paper.
Or, you can go the route my wife went and create your own power cards in an image editing tool like GIMP. I had a few card sleeves laying around from my Magic: The Gathering days, so you can even create templates and just fill in the numbers using a dry erase marker. This cuts back on paper and printer ink use as well since you can just erase and write in the new numbers when you level up or acquire new gear.
You can slide in a MTG or other card behind the one you printed so it has a sturdy backing.