First of all, some Revision:
A few activities: 1, 2, 3, 4, 5, 6 and with prepositions
You can also practise in previous entries
(Go to Labels and click "Gerunds")
And do you remember that in Unit 2 we talked about dating?
Here are some good ideas for you!
Finally, here is a song by The Killers
with plenty of gerunds and infinitives to practise: