Tell us about yourself!
Oh. and I love your experiments with concrete. It lends to progress in practicality, many thanks. Good for you and us.
I know this is 7 years later replying but better later than never if the saying is applicable at all here... Anyway, the white things in potting soil used to bug me too until I started growing my own food and pot. It's actually not styrofoam but perlite, "a form of obsidian characterized by spherlulites formed by cracking of the volcanic glass during cooling, used as insulation or in plant growth media." Hope it makes your day or anyone reading this by chance.
Now that is good info. I have been using pallets for the past 5 years around my property and it is almost impossible to dismantle them without breaking a few pieces. I just count the breakage in and really, in the end have resorted to using pallets in their entirety for this very reason. They make great flooring for the chicken coops and other structures that require a hardy base. I must say, pallets are quite well made for the most part and are the handiest shortcut for construction around the garden and backyard.
Adjustable Woven Copper Bracelet
Cat sky trails
Water dispenser for chickens