Do you diversify your gadgets?

Many people like me depend on our gadgets for mission critical work. So it makes sense to diversify our choice of gadgets in case one gadget goes down. Here's how I diversify my gadgets:

• I used my iPhone 4 for working on my e-mail until the most recent iOS upgrade caused my e-mail app to hang or crash often. So today I switched over to my Samsung Nexus S phone, which works perfectly fine with my e-mail. I'm not switching back to iPhone until Apple or my e-mail operator fixes the problem.

• I still carry a Nokia C5 candybar phone for making voice calls. The battery lasts for days without recharging, and I prefer the buttons for quick typing on-the-go.
• I carry SIMs from three mobile operators when I travel. During my last trip to Korea I had to switch SIMs due to data roaming problems. I racked up a bill of US$790 for data roaming charges but it was totally worth the investment.
• I use a MacBook Pro running Windows 7 as my primary work environment. But when Windows constantly crashes or refuses to boot, I can always boot up to Mac OS and continue working.
• I like to use the Apple Magic Mouse with my MacBook Pro, but the battery runs out sometimes and my MacBook Pro has Bluetooth problems. So I carry a wired mouse in my bag at all times.
• I carry both VGA and HDMI display adapters in my bag. VGA projectors work fine but the colours look horrible and VGA projectors often can't handle the widescreen aspect ratio properly. I prefer to use HDMI monitors and projects where available.

Have you thought about diversifying your gadgets? What if your smartphone gets lost or damaged while overseas?