Want to use your laptop at a pavement café? Why not? Several cafés provide a hotspot so your work can be made even more pleasurable. Looking for information on the city? You can find that digitally too, at the info kiosks scattered around the city. Of course you can also go on the internet in one of the many internet cafés.
And another handy thing is a public lavatory. Ghent is a friendly city for those with a small bladder. Not only does the city have about 100 toilets and urinals, it also has an actual map of them and a media campaign against urinating in public places.
Want to send a card? You can buy stamps in the post office. Open from Monday to Friday.