Paver walkways and patios are popular projects with do-it-yourselfers, and each one is as unique as the people who tackle them. The one thing they all have in common is the need for edging to contain the pavers along the perimeter.
The best option is to use fast-setting concrete mixed a little drier than normal to create a sloped curb. Pack it in along the border pavers about an inch below their surface. When it dries it will lock the pavers in place, and in no time the surrounding grass or landscaping will cover it completely.