I made these using felt, clear plastic material, large lima beans, and colored pasta.
Each one of these took a piece of felt which was
half (hamburger end) of an 8 1/2 by 11 inch piece of felt.
I took a regular size piece of felt and cut it in half (8 1/2 by 5 1/2 inch)
and then folded it to make the bags.
I cut out a rectangle piece on the front and sewed a piece of
clear plastic material (it is the material you use as a clear table cloth or shower curtain).
Here is a close up of one bag.
I took large lima beans and wrote on them with permanent markers.
I then put colored pasta as extra stuffing.
I sewed a letter or number on the back (before you stuff or sew it together).
This helps me remember what sight words are in each bag.
P = Preschool, K=Kindergarter, 1=1st grade, 2=2nd grade, 3=3rd grade.
I also made a laminated list that goes with each bag.