Got a RasPi and an LCD screen? You can hook it up to display some info (like the IP address here, very handy when using DHCP and carrying your Pi around).
The LCD does not need to be a 3.3V model, mine is a 5V and works like a charm.
Once attached to the GPIO, you can use a python program to send some text to write.
The examples show a clock and the IP address but it might be better to display events that only occur from time to time (the clock script runs continuously).