In reply to An Triubhas:
Hi An Triubhas
As far as I'm aware there are only 2 campsites in or by Grindelwald and after a mates recomendation who had been, my buddies I stayed in the Eiger Nordwand campsite in Grund last summer:
http://www.eigernordwand.ch/
Both campsites are expensive (about 20 chf pppn with a car I think) but the facilities at Eiger Nordwand were very good, the site got a lot of sun unlike the other, the setting was superb with the North Face as a backdrop, a 5 minute walk to the Grund station if heading up to the Jungfraujoch station (about 175 chf return!) although it was about a 20 minute walk uphill to Grindalwald an the Co-op for supplies, beer, wine etc. The other campsite was tucked away in Grindewald itself and seemed to largely cater for campervans with little space for tents and appeared to be in the shade a lot!
Hope this helps
Dave