Having a massive garden means you can build massive things.
My Uncle Pete called my bluff this year and bought the kids a drum of steel cable for Christmas. Over 100m of it to be precise, 10mm diameter!
Although initially quite confused on Christmas morning, once they'd seen the climbing harnesses and other acoutrements they soon worked out it was a zip wire, and were thrilled.
It was harder than you might think to errect.
There are plenty trees in the garden but not too many that can support 70KG of steel cable being strung up high in their branches. Never the less after laying it all out and pulling it taught with the land rover, we had it up!
It still needs some finesssing and a platform building so they can ride it themselves, but that will have to wait till summer.