This is a fun activity from my colleague Steve, which works well with teens. Write up a sentence on the board about your weekend, but don’t include any vowels. When the students have guessed what you did, ask them to write a sentence themselves, then invite them up to the board individually.

n Frdy nght wnt t Cdz t s bnd.
n Strdy my byfrnd nd wnt shppng.
Ystrdy w hd brbc n th trrc bcs t ws vry snny nd ht.