Adrian and I checked out Big Box on the day it opened and went away somewhat underwhelmed. It is the biggest warehouse retail mall in Singapore and has some interesting stuff, but it just feels rather random. They have some of everything, but nothing I would specifically travel there for.
There are some unusual brands here and there but again, nothing outstanding. I liked the stuff at Habitat (not cheap though!) and the Papillionaire bikes at the sports section. There’s quite a bit of parking and lots of food available.

trying some sushi and sashimi

food street
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furniture
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outdoor furniture

food court

Habitat
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Habitat

fast food

electrical appliances and IT stuff

another eatery

goods for elderly

DIY
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wine and Happy Call pans

bins galore

Cake Boss baking products

vegetables

more food

clothing

Glitter Glam matchy matchy mother-daughter clothing

sports equipment

love these Papillionaire bikes

coach tickets, etc