Any photos of the car? Would help with recommendations 
Defo Stage 1 remap, Iv never looked back!
GTI6 steering wheel is really nice too, couldn't not have one now
Youll want some more supportive seats if your car is one of the lower spec ones as you will need them haha
Xsara mist jets a must in my opinion
Aero wipers also a good upgrade
Front speaker upgrade also well worthwhile
Just a few things ive done to mine which really make the car a lot better
Defo Stage 1 remap, Iv never looked back!
GTI6 steering wheel is really nice too, couldn't not have one now
Youll want some more supportive seats if your car is one of the lower spec ones as you will need them haha
Xsara mist jets a must in my opinion
Aero wipers also a good upgrade
Front speaker upgrade also well worthwhile
Just a few things ive done to mine which really make the car a lot better