|Phantom Venom||Injury||16||—||1/round for 6 rounds||1d4 Wis damage/Phantasmal killer||2 saves||1400 gp||Craft Wondrous Item, Phantasmal Killer, CL 7|
|Mercury's Charm||Ingested||16||—||1/hour for 7 hours||Charm Monster/1d3 Wis Damage||1 save||1400 gp||Craft Wondrous Item, Charm Monster, CL 7|
|Dazzling Flame||Inhaled||11||—||1/round for 1 round||Dazed||1 save||25 gp||Craft Wondrous Item, Daze, CL 1|
|Stature Reduction||Injury||11||—||1/round for 1 minute||Reduce Person/1d2 Con Damage||1 Save||50 gp||Craft Wondrous Item, Reduce Person, CL 1|
This is just a quick table of a few ideas. More will be added as time goes on but I thought some of these would adequately give us somewhere to work from. I used the potion formula for cost as they are use activated/single use items. The original suggested formula was too low ringing the Phantom Venom in at 420 gp.