Take special care with ~adjustable~ organizers like this one because they’re prone to dirt falling into their nooks and crannies. Once a week, wipe them out with any all-purpose cleaner you use on the rest of your kitchen surfaces.
Those slots that protect your prize knives are also a prime spot for dust. Once a month, remove the knives and use the crevice tool on your vacuum cleaner to suck out dust. Don’t have one? Blast it with your hairdryer on High or use a long pipe cleaner. Sanitize it by rinsing the block in hot soapy water, then soaking in a solution (1 tbsp. of bleach to 1 gallon of water) for 1 minute. Dry on a towel with slots-side down.
Dust, oil from your skin, and every little piece of lint to ever float through the atmosphere ends up on your electronics’ screens. Make a pass with this little roller every day you use them to see a difference.
Actually crisp toast — not crumbs and debris from toast of yore — by emptying the crumb tray once a week. (Even the cheapest of toasters, like this one, have it.) And give the exterior a good wipe down with a stainless-steel cleaner, too.