I used to use E6000 for the bails but I find a super glue works just as well and is less messy. I had to apply the E6000with a toothpick but I got the super glue witha very small tip and just place a drop, it dries instantly too.
I have a bazillion scrabble tiles from yard sales/thrift stores. I have everyone I know scoop them up when they see them.
I bought the mini ball chains from someone on etsy, I wouldn't recommend them. I have 100 and I cannot get the clasp on the balls it is all too small to work with so I think I will buy the larger bails and get the regular size ball chains.
Another tip from experience. I have always used a silver paint marker to color the sides of the tile (I just thought it looks more fininshed) but I put all my tiles in a zip lock to transport to the fair and the silver rubbed off on the face of the tiles
I will not be doing that again, it won't rub off the CE so they are ruined.