The most “famous” method in Singapore to collect samples is through Sample Store which is an online platform.
Wide Variety of products to choose from [huge plus points]
Easy to use interface
Deliver right to your doorstep
Web page might lag when attempting to load more products
Not all products are free
Some products are free but contains “handling fee”
Totally free samples are often out of stock
You can know more about it via video below or going to Sample Store directly.