Sam

Hides random things like a shoe or a charger until you finally notice that he's taking your things

Colby

Gets hair extensions in your hair colour and pretends to cut your hair.

Aaron

Changes the language on your phone.

Jake

Put food colouring in the soap dispenser.

Brennen

Cheating prank.

Corey

Buys you a small gift but covers it with boxes until you have heaps of boxes to open.

Elton

Marry me prank.