Okay, I admit that I haven't trawled back through the thread to check if these have been posted before, but I've looked pretty thoroughly in the past and I don't recall seeing these. Well, they are part of old Perfume history so hopefully some will find them interesting! Be prepared for low, low quality though - these are OLD! (And apologies if any ARE reposts here!)
1) Super Jet Shoes (cover of original released by Peachy (Rika Ishii, later in H!P for a while!) ... from their time at Actors School Hiroshima, in 2000. They were about 12 years old at the time, and this includes Kawayuka, before she left and Nocchi joined.
2000年 スーパージェットシューズ 河島佑香 樫乃有香 西脇絢香2) Trouble (cover of original released by Shampoo in 1994) ... don't know exact date, but it would have to be around 2000-2001. Can't work out if it includes Kawayuka or Nocchi. And listen to them sing English ... wow!
3) Super Jet Shoes - mix of three early performances, the last (I think) from December 2006, later included on Fan Service ~bitter~
Enjoy! (or not...) ... credits to the original uploaders, in fact huge thanks, hugs, waves and other good vibes to them for uncovering such wonderful Perfume moments!