Unfortunately, most beads that would work for a nursing necklace have the potential for choking-that's why you really need to be sure you have strong cord-leather is good. Check what your local places has and pull on it, tug it, and really try to see how mcuh it can take-of course, you're stronger than a toddler but you want it to stand up to a lot of tugging. Don't use a clasp to close it-you'll need to tie it in a knot-again-pull it, etc to be sure it's going to hold-since they are longer anyway you shouldn't have to worry about undoing it to take it on/off.<br>
There are so many beads out-glass, wood, plastic-just pick what you think will grab his attention.<br>
One more trick, you may want to tie a small knot every few beads just in case it would break to prevent all the beads from coming off.<br>
And don't forget to look at the size of hole in your beads to make sure they'll go over the cord you use-leather is larger so you'll be more limited in what you can use if that's what you go with=just an FYI <img alt="" class="inlineimg" src="http://www.mothering.com/discussions/images/smilies/smile.gif" style="border:0px solid;" title="smile"> I learned this the hard way.<br>
hmmmm.....what about a weighty hemp string? That should be pretty good. Thanks for the suggestion of making knots every few beads. That's an excellent idea. Do any of you have a picture you could post of the necklace that you made? So I can get ideas.