1. An investigation involving digit ratio (measure of prenatal testosterone exposure - as suggested in sept 2007 Psychology Review).
2. Loftus and Palmer replication - make own video clip (of something other than a car crash) and use your own keyphrase
3. Levinger and Clarke - memory for free-associations to to negatively charged v neutral words
4. One of the PsychLab studies
5. Compare positive v negative or positive v neutral statements and number of penalties scored.
6. Replicate Bower et al (1969) on organisation in memory
7. Carry out a study on biases in police lineups (See Gary Wells website)
8. An experiment into the effects of pre-event information on perception (perceptual set)
9. A version of the stroop effect
10. A comparison of nmemonic techniques
11. A dichotic listening task similar to those of Cherry or Treisman - there is a very good open source audio editor called "audacity" that can be used to make suitable stereo recordings (free to download)
12. A study on facial attractiveness see faceresearch.org (I have confirmed with the programmer who runs the site that it is okay to use your own generated images for educational use)
    

If you have any other ideas, please feel free to comment below