I've been tinkering with my standing desk for the better part of a year. I started with some jury-rigged wire shelving, small IKEA endtables and even my computer tower itself. All this on top of my normal sit-down desk.
Standing desks can be pretty expensive, so I was hesitant to go that far in my quest for the ideal standing/working situation. I didn't want to drop a few hundred bucks on a standing desk that wasn't even the right spec for my needs.
It took a long time to figure out my ideal viewing height, the right height for my arms while typing, and the right height for designing. When I moved to the North Carolina office, I quickly discovered the discomfort of standing on concrete. That's when I got a set of basic floor mats available from most hardware stores.
That's how it was for months. I was content with my unsightly mish-mash. Then Mego found these quite nice Closetmaid modular wooden shelving units. I tried one for my keyboard and mouse. To my pleasant surprise, I had way more room than I had with my hodgepodge setup. Plenty of room for an ergonomic keyboard and mouse somewhere down the line.
Mego got two more units so I could prop up my monitors. Now I'm not so embarrassed about my desk configuration. It actually looks like a proper single-unit. It doesn't wobble precariously like my DIY setup. Plus, I have tons of little cubby space right at arm's reach.