Ever think of adding Lookalike Items? Like in PMD2? For example a Wrap (warp) Seed that binds you, or a Spurm orb (spurn) that fills you with cum or w/e, maybe a Violet (violent) that summons purple pokemon like ditto and haunter lol!
also it kind of sucks that putting enemies to sleep lasts maybe 2 turns at best, when it happens to me it lasts 50 years