This is a worksheet I made for my JHS 2nd years to have fun with English tongue twisters while still focusing on important sounds. Feel free to use as a template and edit however you want! I tried to find tongue twisters that were fun and also familiar to me as a kid, but also focused on sounds like l, r, v, b, etc. Can probably be used for any age group you want. It's just a fun activity to get them using english sounds and working on their pronunciation in a way they really seemed to enjoy. You can make any of the shorter tongue twisters longer by making them say it 3 times (fast, if you want). They really liked it when I did the tongue twisters first and got a good laugh listening to me. The bonus is easy to take out, and is just there for the fun shock factor and getting them to try something longer and ridiculous.
If you want to make it more challenging, you can try and have the students tell you the meanings of some of the tongue twisters for some of the simple ones.