Reflective essays can be on anything.
Reflect on how you love the colour blue, the relationship you have with your best friend, your favourite hobby etc etc
It doesn't need to be some tragic coming of age 'I nearly died' type of thing like it was espoused to me in high school - I wrote one reflective on how I loved reading in 5th year, and in 6th year I wrote one about my ex lol. Both got As so your topics are really endless, and the markers seem to appreciate things that aren't angst fuelled 'I was depressed' or the typical coming out story that LGBT kids always write.