Research... Business Planning... Training... Due Diligence... Marketing and Media Planning... Ad Production... Web Design... Social Media... PR... Environment... 

One size most certainly does not fit all.

Your specific business requirements may involve a review of your entire marketing strategy, or perhaps the introduction of a new, innovative piece of tactical activity which can be scaled up after testing.    For example, an innovative micro blogging social media pilot providing measurable results, or a mass market, big budget TV campaign inclusive of ad production and media buying to turn up the gas for brand awareness and direct response.    Or perhaps implementation of "green policies" to reduce carbon footprint, improve your competitive edge and increase profit.  Maybe even help for charities with research of grant making foundations and associated bid writing.

Whatever your needs, I should have proven ideas which will generate a low risk return on investment.