I've been working on a haunted house for this Halloween for a while now, that will include lots of jump scares and non-deadly traps (think of it like one of those harmless haunted houses at carnivals. Nobody gets hurt, but you still get scared).

The problem is, i'm running out of ideas on traps & scares that won't harm/kill a player, can be reset as soon as the player passes, and doesn't require command blocks (I'm building this on a server where I have creative mode, but not access to command blocks, as they're reserved for admins). The server is also 1.7.10, so i cannot use anything from 1.8 yet.

The traps I've done so far are simple ones, like trick floors that open up and drop you own, secret passages (flush piston doors), and a noise-scare of a dying ghast (spawn a ghast out-of-sigh with a tripwire, then suffocate it)-- but i'm not sure what else to do

Would anyone happen to have an idea, or a video that might help me out? I'd greatly appreciate it <3