Here are the first sketches that we made once we chose an idea that we wanted to pursue! Scroll down further to see.

An image of one sketch, labeled "eye drop bottle device!" It is two components of the eye drop bottle device together, with a cylindrical position component at the top and a round hand held squeezing component at the bottom. There is also an arrow pointing to the seam of these two parts, labeled "latch."
The eye drop bottle device with the two components attached together
Image of two sketches. The one on the left is labeled "position component" with a short cylindrical drawing. The one on the right is labeled "squeezing component" which is a round, hand held part. There are arrows pointing to finger grooves on the sides. A label also says the words "attaches together," signifying that these two component can be put together.
The eye drop bottle device with the two components, positioning and squeezing, apart

This is an image of two more sketches, with the label "cross section of device w/ eye drop bottle." This shows the two pieces attached, with an eye drop bottle on the inside, showing how the bottle would be used in the device. There is also a label at the top of the eye drop bottle saying "can screw cap back on the bottle!"
Cross section of the device with an eye drop bottle inside

This is an image of a sketch of an eye drop bottle that we are using for our device. It has the label "ideal bottle. 15mL on the left side.
The ideal bottle that we are modeling for, 15mL