Visitors from overseas... this is the tip of the day. How do you reserve a seat in crowded foodcourts etc in Singapore? (the local slang is "chope", if you do not know how to pronounce it, its rhymes with choke)
Yes tissue paper!
Why do you need to "chope" seats? People will want to eat their food immediately after getting their food. Not walk around carrying the delicious bowl filled with hot soup, (or maybe a heavy claypot) trying to balance it, prevent it from spilling, salivating at the same time, and there's no place to sit and eat. How pathetic that would be.
So, you find an empty table, leave a packet of tissue there and walk away, you have indicated to others that this table is taken, so do not even think of hijacking my table! LOL...
The tissue is from a colleague who recently went to Japan, they give out lots of free advert tissues. Here's one of the many packets that you can collect as souvenir from Japan.