 Her sculpture, "Caterpillar", was a 15-metre long and 2.3-metre high steel sculpture lined with 30 poster boxes; commissioned under a partnership programme between National Arts Council and City Developments Ltd. Tay emphasises the presence of caterpillars as indicators of environmental degradation, with sightings more uncommon due to urbanisation.In 2013, Tay's installation "Knot, Play, Rest" was featured in the 2013 Singapore Biennale.It encouraged people to come together to "meet, communicate and play", in a fabric rope playground of the artist's construction.