Some people cover the slabs to make valances, some use square blocks to use like florist blocks to make bouquets, we cut small squares and cover them to make Christmas ornaments that look like presents, some people use them to stack their canned or bottled spices and such in the cupboards in a stair step after covering with self sticking contact paper. Our son covered them with faux wood contact paper for his train set buildings and gray or black for mountains for the same. There are a number of projects to use it. Whenever I throw some out it seems I need some to make one project or another.
Here are great ideas for various forms of styrofoam: https://get-green-now.com/reuse-styrofoam/
Jojo: maybe this will help
https://www.thriftyfun.com/tf/Green_Living/Reusing/Reusing-Styrofoam.html
Some people cover the slabs to make valances, some use square blocks to use like florist blocks to make bouquets, we cut small squares and cover them to make Christmas ornaments that look like presents, some people use them to stack their canned or bottled spices and such in the cupboards in a stair step after covering with self sticking contact paper. Our son covered them with faux wood contact paper for his train set buildings and gray or black for mountains for the same. There are a number of projects to use it. Whenever I throw some out it seems I need some to make one project or another.
There are several different types of styrofoam, some of which are more suitable to be used for craft projects, as they do not disintegrate.
Please post a picture of your pieces so that we can see what you have to work with.
Styrofoam can be cut so you could always cut it into specific shapes (like trees) and make things out of it.
I use the styrofoam filler from packages to provide drainage in big plant pots.