Bali is a place with different cultures and religions. One of the major religious groups is Hindus, who make offerings to their deities every morning. These offerings are placed in a small weaved basket. They are usually an assortment of colourful flowers, and whatever the food the family has made that morning. These baskets of offerings are placed at temples for deities of higher order, and on the crossroads for deities of a lower order. This means you are likely to come across baskets of offerings on your daily walks in the morning.
This is an ingrained part of the culture though, to the extent that some of the luxury resorts like Anantara Uluwatu Bali Resort have classes teaching their guests how to weave these baskets.