Here is a stamp rack my husband built for me. This holds individual stamps (mainly image). Small sets are labeled and resting on top of it.
Here is a view of the entire storage unit. This is in my kitchen, so my stamps share the same space as my bread maker and my bread box. My husband built this as well.
Here is a close-up of the top portion. The little white drawers hold small alpha stamps, date stamps, number stamps and roller stamps. The little yellow bowl holds my acrylic blocks. I keep containers of flowers within reach along with my Sizzix. The bamboo tray holds larger stamps that are not backgrounds.
These CD racks hold acrylic stamp sets from companies like Paper Trey Ink and Maya Road. I also separated all of my dollar Studio G stamp sets and other small sets into categories. I then labeled the CDs for easy access. So, all of my cupcakes and candle stamps are in on CD, for example. All of the "congrats" stamps are in one case, and so on.
I unmounted all of my Stampin Up! stamp sets as well because they take up so much less room. Each set is labeled and stored alphabetically. The clamshell case holds wheels which I also unmounted and a longer set that will not fit into a CD case.
These are my acrylic stamp sets still in original packaging. The small ones are placed in the little blue basket.
This shelf holds my background stamps from Hero Arts and my wood-mounted sentiment stamps organized in clamshell cases by type.
Finally, my Stampin Up! background stamps are stacked on the bottom shelf. The labels allow me to quickly see what stamp it is.