With the plethora of ebikes in my stable, I have a hard time moving them around and having them fit in as little space as possible. One easy way to gain just a bit more space and to make moving them around easier is to remove the fixed pedals from my bikes and replace them with folding pedals.
Each pair will save about 4 inches (roughly 10CM). It doesn't sound like much but with multiple bikes, it adds up quickly. The best part is that they slip past each other with less snagging of the pedals! These are particularly nice since they flip up or down without having to press any releases. They have pop into the pedaling position with a strong spring which helps the impression that they will stay open.