My SCP Idea revolves around one of those prank kits you sometimes find in stores except that instead of the pranks being harmless and tame, the pranks contained in this specific kit are disturbing, unusual and even potentially dangerous. The kit contains 5 separate "pranks" which I will outline below.
Object 1: Appears to be a box of 9 stink bombs; upon inhalation of vapors subject will immediately go into REM sleep for 30-90 minutes. Subjects describe dreams that vary from cleaning a dirty kitchen to swimming in various bodily excrements.
Object 2: A Pythagorean cup that superheats any liquids poured into it.
Object 3: An object which upon being observed directly or indirectly by a human being transforms into whatever the observer craves, once the observer is within 10 centimeters of the object it will revert to a plastic cube. Unobserved form is unknown.
Object 4: A ball point pen which will begin to draw images without human operation after 10 seconds of use. PRIORTIZE RESEARCH.
Object 5: Whoopee cushion that upon deflation releases sounds in excess of 140 decibels. Multiple D-class subjects have suffered major hearing loss.