Mice are extremely versatile. A bottle of beer, a printer, a bank account, a scanner, a spread sheet, human resource management, you name it, all most likely have something in common with a mouse.
The contrast of big against small is very clear in our third example (3). The performance of this printer is elephant and you'll have it all for a price that is mouse. Text (Heavy weight for a price that doesn't scare you …) and image are based on the mouse scares elephant joke theme.
Both ads also show a feature often present in Dutch advertisements : the English closing shot. It is meant to impress the reader : With L. you can expect to succeed (2), Printers for professionals (3), The essentials of imaging (8).