Limber Letters are bagged tiles originally used in a game that my grandmother has marketed called Anagrabber. It is a game geared toward ages 7 and up. She has graciously given me a few boxes of letter tiles to market to other communties besides the ones that she targets (senior centers, mensa groups, etc.). Anagrabber is a wonderful game and our family enjoys playing it. I have copied the instructions below for Anagrabber, which you can play with Limber Letter tiles.
Before having children I used these in my classroom and sold them to my co-teachers left and right! There are a million ways to use them in the classroom! Now that I am home I can find a million ways to use them with my pre-schoolers! I think the funnest thing about them is making up games. Even kids will come up with fun ways to use them.
Also, because there are 300 tiles in a bag, your options are greater. Scrabble only has 98 tiles and Bananagrams has 144. I would love to hear how you think you would use them!