Creative Promotion Ideas for my Website?

I think you may be in a bit of luck as my dad hass just set up a gardening business. He is getting advretisment from the local news paper, putting adverts in the estate agents and we (five of us) walked round a local fate all wareing the same shirts with the logo and name on it. It seems to be working well so far. Also, he is asking all of his customers how they learned about it, this is to show how affective each advertisement method is best and therefor should be used most.