The friends you make

After a conversation with one of her colleagues on solo-kids/kids-with-much-older-siblings, my mum called to ask if I remembered the imaginary friends of my toddlerhood.
The memories of the androgynous twins Boonza and Goonza are nebulous. I can’t quite picture them except for swatches of denim, shirts and short hair.
Except for their odd names (a career in branding eluded me even then), and faded features, I know nothing else of the twins. The years are long and many, and I’ve always been terrible at keeping in touch.
Do you remember your imaginary friends? Have any of them stuck around?