The evaluation method in the end. We asked the people to fold the paper origami-style or whichever style they prefer to represent how they were inspired by the event. If they were not inspired then we asked them to leave the paper as it was. If they thought the event was a waste of time then we asked them to crumple the paper.
Result: Most people folded the paper into nice shapes. One person left it as it was (but told us that they were actually inspired but just were not good at folding). One person decided to write down with Brailles how they were inspired.