Most of the advices that laugther therapy give to us are great, but some of them are so extrange or difficult to follow, such as the one that says to wear a funny hat. I think that advice is very cildish, and I guess no one would wear a fun hat to go to work or even just for a walk, no one would take you seriously. That if, if you go to a costume party or something like that, I can get it to understand that you put on the hat.
I think the most logical option to have fun is taking time off to laugh with your co-workers for a few minutes, talking about how the work is going or or explaining how everyone's life is going. This way, you at least get a little distracted from the pressure of work and have a good time with your friends.