Mine were Puppy in my Pocket, followed by Kitty in my Pocket and Pony in my Pocket (they went too far with Teddy in my Pocket IMO)
I also loved Polly Pocket. My favorite was this huge purple heart-shaped one which opened to reveal a castle which lit up.
In the late 90s I remember caring so lovingly for my Tamagotchi
and telling all my secrets to My Electronic Diary.
Oh the memories. It was a simpler time back then!
What do you fondly remember as a child of the 90s?