Jason appropriately labeled these items as "relics" on his facebook page. These are the items that were in the box that my cousin Anna-Laura showed me. The note enclosed listed only a christening cap belonging to "Grandfather Eikerenkoetter" (John Christian Frederick Eikerenkoetter born 23 May 1800 in Warburg, Prussia) and a slipper that belonged to his mother (Anna Maria Sophia Antonetta Verson). There appear to be two caps, I'm not sure which is the christening cap. Also not sure if the bit of lace is part of the slipper. The suspenders, however, clearly have the owner's name written on the buckle.
I have got to get to Okatie!