Check out these tongue twisters I've found at The ESL Comando blog.
- Perry's Berry's make peanut butter better
- Buy pie pans before you buy butter plates.
- Pat's bat played with Benny's penny.
- Purely poor people need to perfect their power.
- The prince and the pauper play ping pong poignantly.
- Printed papers under pressure make pens prickle.
- Pickles and pennies take proper preparation.
- Ben's prefers pens to bought pots.
- The poor boar pours batter over his putter.
- Bob's pop popped primarily because of pointed pressure.
And of course, the classic(not my own):"Peter Piper Picked a Peck of Pickled Peppers."