There's a hobby/paint shop in Plainpalais called 'Peintures Jallut', at the end of Rue Dancet.

I think I remember seeing them at Jumbo in Meyrin, though that was a while ago

they have the migros art shop in the cygnet shopping mall oposite the train station.  might have the canvas

In addition to Edward's address in rue Dancet (Jallut), there is also another shop in the same street:

http://www.bricodancet.ch/

If price is important and if you're handy, you may also make your own canvas, using some sheet/cloth painted with GESSO + make your own frame, which I did years ago when I was painting for fun.

Some explanations here (in French):

http://www.art-georges.fr/SITE_FR/pages_html/Construire_Chassis.html

Or buy the canvas and only need to build the frame.

Have never tried this on-line shop ...

http://www.vaissiere-peintures.fr/toile-au-metre-page-116.fr.html

At the moment M-parc La Praille are having a sale on art products including canvases

Try Beaux-Arts Perrier, close to Rive. Shop is miniscule from the front, but like a Tardis inside. Staff are friendly, and there's usually someone who can speak English to help.

http://www.beaux-arts-perrier.ch/

missdaisy, i think i am pretty handy and would give it a try to build my own canvas. Then the question is, from where can i buy a frame sticks? Would they have it in Jumbo or somewhere else?

Thank you very much...

Thank you very much for all responses. I am hoping to share my artistic works thanks to your advises :))

You can buy frame sticks at jumbo, M-Parc and probably any DIY shop.

I'm not quite sure, but name in French should be liteau or lambourde (second one a bit thicker).

You may also need a boîte à onglet to cut the frame sticks: http://fr.wikipedia.org/wiki/Bo%C3%AEte_%C3%A0_onglets