I added these supplies to what I picked up from the hardware store (5 hex nuts, 1 carriage bolt and 1 lock nut). Make sure that your hex nuts are larger than your bolt so that they slide as opposed to screw up and down the bolt. This makes them easier to turn, the more nuts you add on.
I added the letters onto each side of the nuts and then put the mod podge on top of them to adhere them to the nut. Since my kids are at different vocabulary levels, I knew I needed to make it a game that they all could play! This was perfect! They could easily play the game with 2,3,4 and 5 letters (Just add or take away the nuts as needed) and when they think they've spelled them all, take them all out and mix around the order!!
For beginning readers try
F, L, M, N, R, S on the first hex
A, E, I, O, U, R on the middle one
B, D, G, P, T, S on the last one
For 150 pronounceable combinations
For More advanced combinations: