I fill up the bottle, add an old medical chronometer, a mirror, a funnel, a deck of cards, keys... The spoon has a rabbit engraved.
The warden assisted the nurse who used at very regular times the spoon for the potion: we've the "white nurse with a rabbit spoon" (white rabbit and the chronometer), the funnel in case of the patient didn't want to open her mouth (the hole), the playing cards (with the queen of hearts at the face, of the deck), the potion (drink me), the mirror etc.
You get it ?
I just find a 1910 postcard with nurses from a "
Glenwood, Iowa Childrens State Asylum"* (I will make it fit into the story) on Ebay.
All the keys are perfectly balanced, they can easily rotate in the palm, if needed.
Next step...
I add a thimble too. Something that was confiscated from the patient.
* Glenwood, Mills County, Iowa (IA)
* Iowa Institute for Feeble Minded Children
* State Hospital School; State School for the Mentally Retarded
* Started in the 1800s as the Iowa Asylum for Feeble-Minded Children (the first such asylum west of the Mississippi River)
* Four young nurses are shown in this real photo postcard. The one marked with a tiny "x" at the bottom of her apron writes to her aunt, "I am sending you a picture of four of us girls at the Inst. in our uniforms."