My old work place use to take a Cat5 cable and put two crimps on it and run them over 100 meters.
The way this worked was a Cat5/5E/6/etc have 8 wires. two for transmit 2 for receives and 4 grounds. Instead of having 4 grounds, the cable guy would use the 4 grounds for an additional 2 TX/RX which would let him get 2 lines out of one cable.
Yes, this worked because we used a very expensive gigabit line tester and we got 0 packet-loss doing it this way and OVER 110meters, which Ethernet claims to only be good for 100 meters.
So, recap. Perfect 1000mbit full duplex crimp that extended 110+meters and only used 4 of the 8 wires.
edit: I'm not recommending this, just saying the difference between Cat5 and Cat5E isn't all that much. Don't worry about a printer on Cat5E