Here are a few (not tried and tested) but you can always get adventorous :
1. Ask personal questions to the most snobish salesman at a snobish outlet.
2. Talk in a higly accented english with the same snobish salesman (rehearse beforehand- another way to kill time).
3. Give a fake smile to people at corniche. Make it snappy like a flash.
4. Make funny/scary faces at kids on corniche.
5. Make a list of all swear words you know and keep the list ready for use (in purse/besides phone/in your car).
6. If you are working than prepare a list of important phone numbers in the smallest font possible and stick it on your computer monitor with a bright sticker. Think and analyse the reaction of your work mates on weekends.
Bye and cheers.