It's a very broad spec but if you are looking for a generic brand you need to use simple shapes and warm colours (think virgin) so your brand has an positive feel on an unconcious level. Green is considered a therapeutic or relaxing colour, deep red for passion, look at existing brands out there. A rising sun might remind people of their holidays (usually a positive connection).
But remember, you do not need to rely on one brand, you can build stronger branding if you create new branding for each product or service.
Take coke for example they make fanta, lilt, sprite and a host of others but they all Market on their own strengths.
Good luck!
PS when you find your killer logo, give me a shout and I'll help you our with some workwear with your logo perfectly embroidered on! (check out the offers section)