A couple of years back I bought a MacBook Pro with the antiglare display for this very reason. It was great to be able to work in the garden, in theory, but then you realise MBPs have/had awful battery life, especially in the sun, and when they get hot they're literally painful to work on. Oops. Would love a simple, cheap, tiny Linux netbook with high quality keyboard & trackpad. Resigned myself to the fact that I'll…
I've had good success with the Acer Aspire One netbooks and Linux. And other than the power jack (which I've had to replace), I've been very happy with the quality.
And if you run a distro like Crunchbang, it boots up very rapidly. Even Linux Mint with Mate or Cinnamon runs well on it.