Planters & Planting Containers...

Dear everybody !

What sort of watertight, strong, containers of 300-1000mm width/diameter & 300-700mm depth do you think might make useful planters for the HUB incubator? 

Neverfail water flagons would be suited to a larger scale version of the fine self watering system pictured below (but Neverfail flagons are already performing their function)...


It would be wonderful if the material was transparent, but transparency does not seem to be common or perhaps even possible with recycled plastics. UNIMADE in South Australia make large diameter pipe and panels which show the colours of the plastic items from which they were recycled - sounds very colourful! 
Does anyone happen to have any plastic welding equipment?

Also, I will be visiting Adalia Park Nursery in Gisbourne this Friday the 1st. If anybody has any favourite plants or special questions for Sean the nurseryman let me know and I will ask him....
Thanks!
Thomas....

Amusing and wonderful planter concepts:

The Solar Powered Pot

The Sky Pot - from Patrick Morris

The Paperback Planter