I couldn't find the clear plastic one anymore! I hope it's ok to post links. These are not affiliate links lol. :)

https://www.amazon.com/UPKOCH-Shaped-Stainless-Storage-Container/dp/B0B6HBHZ5X

https://m.aliexpress.com/i/4000498349372.html

https://www.finenordic.com/rice-plastic-food-keepers-heart-shape-3-mixed-colors-small-8-pcs-in-a-net.html?gclid=EAIaIQobChMIt5Xx1__1_AIVDY3CCh2-XQSmEAQYDiABEgJfFPD_BwE

https://www.amazon.com.au/Cute-Heart-shape-METAL-Bento/dp/B004RKL6T8