If you need inspiration for building new ideas.
Collect a huge amount of small inspirations to use for ideation further on.
Prepare interesting pictures with a unusual perspective to inspire your audience! If you like you can also add some pictures which are loosely connected to your workshop-topic.
But keep in mind to only show irritating/unusual views!
Show them quickly (only for 5 seconds max) and let the participants note their first idea/impression/thought on a small post it.
Additional you can put all post its on the wall afterwards.