We have several different flash cards that we like to use. Most are preschool/kindergarten flash cards for my 4 and 2 year old boys.
Until a recent trip to my sister-in-law's house, we had trouble keeping up with them. My super smart sil hole-punched all of their flash cards and put them on metal rings (we use curtain rings).
Wow!! How easy is that? Now my boys can easily flip through their flash cards without losing them under the couch!!
Thanks sil!!! =)