Just use each finger as a binary digit, open or cloned, and you can get to 1023. If you're really struggling to count you might add your eyes, elbows or and kne

Just use each finger as a binary digit, open or cloned, and you can get to 1023. If you're really struggling to count you might add your eyes, elbows or and knees and get to 2^16 - 1. That should be enough for anyone.