Sticky notes are kind of like...
mini notebooks
A GPS is a kind of...
device
An iPad is a kind of...
tablet
An E-reader is kind of like...
a tablet // a cellphone // a book
A cupcake is kind of like...
a muffin
A dictionary is a kind of...
book
Alexa is kind of like...
Siri // Cortana
A pizza is kind of like a...
tortilla / pancake