Had a creaky clutch pedal that was driving me bonkers.
Placed a couple of washers on the pedal that connects to the master cylinder. It stops the side-to-side movement of the master cylinder eyelet as you push the pedal, thereby creating the creak. Greased it up too. Obviously lost the retaining pin down a hole! local diy shop had some R-clips for 10p
Also got some 'grip tape' and covered my clutch pedal with it. I have aftermarket metal pedals, but when my shoes are wet, they slide off. Quite a useful addition with the weather that will shortly follow.