Two recent news items caught my eye, as they are related to the topics of my next book (memory, creativity, critical thinking).
The first describes a study which suggests that color can affect our creativity and our attention to detail (which can help us remember):
Perhaps more research of this sort could give ELT materials writers some ideas for what colors to use in their coursebooks...
The second news article mentions some research indicating that doodling could possibly help us remember things better:
Hmmm, this could be an interesting idea for a vocabulary review session.