The designers made two trips to Japan last year to meet the makers - first to discuss ideas and later to check in on how production was coming along. Each maker was paired with either one or two of the designers for this project.
As both designers and makers were unfamiliar with one another, there were many things they needed to work out.
For starters, there was the language barrier. Mr Otani stepped in as a translator and when designers and makers communicated over e-mail, Google Translate and detailed sketches came in handy.
Creating for a new set of customers, the makers had to understand the Singapore references or change their perception of what works well for a non-Japanese buyer.
Take, for example, Ms Yee's Museum Of My Mind, two wooden boxes she worked on with Hakoyoshi Kiribakoten Co. The pale greyish-brown Paulownia wood boxes have bright stripes running down one side, its lid grooves painted in. The medium-sized Daidai Iro box has a tangerine orange swatch, while the small-sized Hana Kon Iro has a dark green stripe.
The company's chief executive officer Shigeyoshi Tobari, 50, says: "Usually, we would never make a box with such bright colours or paint the grooves underneath the lid. Japanese customers will complain if we sold them a box like this. It's a completely new perspective for me, but I see it as a good thing. If I want to sell these boxes outside Japan, I have to challenge what I know."
While going beyond home-ground is what drew many of the makers to the project, some are also hoping to kick-start demand to keep their niche industries thriving or turn their traditional craft more cosmopolitan.
Daruma doll-maker Hirohisa Imai, 47, grew up watching his parents mould and paint these papier-mache figurines in traditional colours: a bright red hue for the stout bodies and thick black strokes for the curvy eyebrows. Considered Japanese lucky charms, these dolls are commonplace in many Japanese homes.
When he took the helm of Imai Daruma about two decades ago, the industry was facing poor demand.
The small home-based workshop in Takasaki was started by his grandfather more than 80 years ago and is one of three top doll-makers in the area. To jumpstart sales, he started making stylised Darumas, featuring non-traditional characters such as Hello Kitty-shaped Darumas and worked with Japanese designers to create minimalist-looking versions.
Last year, he made Merlion-shaped ones in collaboration with Supermama. This time, he worked with Mr Tham to create a pair of Daruma dolls decked out in Peranakan wedding finery.