These two planter pots where moulded using cardboard boxes and ice cream container. I haven't sanded or painted these yet as I haven't decided on a pattern or colour. The drainage holes are real easy to make, I just cut a toilet paper roll and put it in when I was pouring and setting the base.
These are my first 4 attempts at making concrete planter pots. I brought Quick Set concrete that starts to set with in minutes. I just mixed smallish amounts at a time. I found the more water I used the smother the final look was. I painted them using 1 can of grey primer spray paint.