Cheesy grins, weird backgrounds and of course...Double Exposure.
I'm really not sure what compelled certain photographers to do the things they did in their photo labs from the late 70s to the early 90s , but I'm glad they did. There's something really special about this era of photography, for all the wrong reasons of course.
I recommend using Juggernaut XL at full weight of 1 for best results. Best resolution is 900x1280.
Lowering the weight will still give you 80s style photos, but the double exposure effect tends to get lost.
Fun prompts to use are dark background, laser background, universe background, double exposure effect, 1980s style, and if you really want a bunch of views of a character add multiple views of (insert subject).