Have enjoyed blowing up balloons and air-mattresses.
Would love to go up in a ballon one day - it's on the bucket list.
If it involved explosives, it would have to involve destroying something that is causing harm - China's new dam on the Yangtze River would be an example. It has caused starvation to several countries downstream by robbing millions of farmers of their irrigation, destroyed the fertilitily through the loss of new soils in Sring floods, and destroyed thousands of hectares of unique wildlife preserves of wilderness, risking the extinction of many endangered species. Of course, the people now just starting to take advantage of the stolen water and hydro power would have to be evacuated back to their original homes and compensated.
The only thing I'm interested in blowing up is an air mattress if I have more people than beds at any one time. I just bought two beds for the guest room so I shouldn't need to inflate it as often. It's actually kind of fun since I have an electric pump.