Dear Cheryl, 

This quilt sounds absolutely lovely! Here are some suggestions that popped into mind for quilting the border: 

• trace your daughter's hand and foot prints onto cardboard or plastic. Space these at random along the edge of the border, or have two hands or feet make a 'V' at quilt border's corners. I would also add sibling hands/feet, as well as yours and your mate's. 
• trace some of the clothing items you used on the quilt's center...if they're too big to fit into the border (I suspect they are), use only the smaller items, or 'reduce' them on a photocopy machine until they fit. Freehand sketch in a meandering 'clothesline' on the border, then randomly add the clothing patterns to make it look as if they're hanging on the line...when quilted, this should almost look as if their shadows are in the border! 
• the easiest of all -- just use the checks in the border fabric as a quilting guide -- you won't have to mark anything at all. Decide if you want a pattern of squares or vertical/horizontal lines, and what spacing you want to use...then quilt, following the lines. As for marking these, you can use: 
  • chalk (only do a small portion at a time -- has a tendency to wear off *pencil (lightly!). May not wear off for a while...or never. A solution of watered-down Joy dishwashing detergent will often dislodge pencil marks if they're not too heavy. 
  • a washable blue marker. Although there is some controversy about these, especially for people who wash their quilts in hot water or leave them in the sun (the marks have a tendency to come back then), I have never had any problems. BUT I use them lightly and wash them out as quickly as possible, too, with cool or lukewarm water.

Obviously, I'm assuming your quilt is washable...

Some books you may find helpful:  Pieced Borders, the complete resource and Borders,  Bindings and Edgings; the art of finishing your quilt .

One final irreverent suggestion. The birds always seem to be hanging around waiting to add their special 'contribution' when I'm hanging clothes out on the line...maybe a bird or two in strategic places? Be sure to date your quilt when finished, so your daughter knows exactly when you made it! 

Best of luck to you, 

Cindy Brick