Last summer I made my first set of hypertufa planters.
They have the look of rough cement, but are quite lightweight and they are quite easy to make!
DETAILED INSTRUCTIONS CAN BE FOUND ON THE BLOG AT Making Hypertufa Containers
Warning - these are sort of addictive to make. You will find yourself making them in all sorts of shapes and sizes.
UPDATE - I have successfully made a hand! I tried it again after tweaking a few things and it worked this time. You can see it at Hypertufa Hands
Perlite, Sphagnum Peat Moss and Portland Cement and the main ingredients.
I used two disposable items for each planter.
Two bowls make a great mold. You could also use two boxes.
The mixture poured between the juice container and the pop cup.
I also tried to make a hand using a glove as the mold, Would have been perfect to "hold" succulents, but I haven't perfected that one yet. The fingers are too thin and kept breaking off :(