Look what you'll be hanging your hammock with in 5 years time...

[forestwalker]

If they ever breed spiders as big as cows I'm leaving the planet !

http://en.wikipedia.org/wiki/The_Forgotten_Planet

Of course, there are limitations in the arachid body plan when it comes to size.

 

[hobson]

http://en.wikipedia.org/wiki/The_Forgotten_Planet

Of course, there are limitations in the arachid body plan when it comes to size.

There are, but you'd be surprised how big they can get normally, depending on breed/type, a friend of mine spends a lot of time in the middle east and he's seen a few sand spiders, they are huge:

 

[Harvestman]

Small compared to those mammals standing next to them.

 

[Squidders]

If you browse the web for any time you will always end up on a page about spider silk hammocks.

 

[Tengu]

Spidersilk is truly the material fantastic but I doubt it will catch on, as people are too scared of them.

 

[Matthew.Passmore]

http://www.ted.com/talks/lang/en/cheryl_hayashi_the_magnificence_of_spider_silk.html

This is a really interesting talk on spider silk.

 

[gliderrider]

To be fair though, "if I buy that hammock/Para cord/Rope(delete as required), will it evolve into something that will wrap me in a cocoon, and drink me alive?" isnt high on the questions I ask before buying kit.

 

[Tengu]

It wont. the silk will be made by silkworms which are harmless and cannot survive outside a controlled enviroment