“Recently, Mexican company BioFase released single-use cutlery and straws that biodegrade in 240 days. If kept in a fresh and dry place, the cutlery remains usable for 1 year, but after that, it starts to biodegrade without leaving any plastic behind. The company collects avocado seeds from companies who process avocados to make guacamole or oil…”

Source: https://www.boredpanda.com/biodegradable-environment-plastic-straws-alternative-avocado-seeds-biofase/