The only show I remember with a giraffe puppet was The Friendly Giant, which aired on channel 8. Jerome Giraffe, I believe (yes, I remembered correctly; thank you, Wikipedia!)
I vaguely remember Marijane's Magic Castle; it was on channel 2, and I think I won a prize of some sort from a contest on it. But that's all I can remember; I was 3, maybe 4 at the time.