[gpvecchi]

I discovered that many japanese guys do this on their cars, I tried and it actually works!
Locate the slave cylinder in your engine bay, loosen the 2 screws that keep it in place, and retighten them (37 Nm for precise people) while keeping it pushed towards the cabin. Done.
There is quite enough play, you'll probably gain around 1 mm, and this makes a lot of difference.
The clutch engage point will be lower, smoother, and the shifting will be smoother, too. Even that s*****y 2nd gear will engage much better.