For newbies to LLJK1 (half-assed unofficial guide)

[Wraithcraft]

i guess the new sprite spinning effects might help make for good hallucinations.

maybe screenshake like what happens during radstorm if it can be localized to the drug user

fake golems, living objects, hostile animals/monsters would also make for good hallucinations

blob squelches, distant explosions, station creaking would make good audio hallucinations

Don't hold grudges from previous rounds or behave based on what someone did in those rounds ( I know this is in the rules but it is worth remembering)

However, some things stay consistent. For instance, if you're repeatedly a terrible person, people will remember you as a terrible person. If two characters get married, they stay married until divorce. However, if someone's an antag, you don't remember them as a ling or wizard.