It is good practice to line the bottom of the pot with gravels or broken ceremics before planting to aid drainage. By doing so, it minimises the chances of the hole at the bottom of the pot to be blocked by the actions of roots and soil.
I could be clumsy at times but it is unlikely that I break enough ceremics accidentally by the time I need to do the planting. Packing peanuts are perfect for the task! I just put them aside in a bag each time I receive a parcel. I feel less guilty too as I am not sending them directly to the landfill sites. Bonus!
I used to get annoyed when I received parcels with packing peanuts. They are not edible anymore and not biodegradable neither. The greenest way to ‘dispose’ it is to reuse. I am glad I found a way to make them useful!