Planting bulbs with a pogo stick
While we avoid unitaskers, sometimes it's just too hard to get by without them. For example, planting hundreds of bulbs by hand would be slow and back-breaking.
The ProPlugger 5-In-1 Lawn & Garden Planting Tool greatly accelerates the task and makes it almost fun, as if you're plugging with a pogo stick. Adjustable rings let you vary the depth from 2" to 4" to 6". You can plug seven or eight holes in a row, plant the bulbs, then replace the plugs by turning the tool upside down.
It's especially handy for naturalizing crocuses in the lawn, where the bulbs will be safe from critters.