For a huge selection of outlet covers, corner guards, toilet locks, and things you've maybe never even thought of, see the safety aisle of Babies "R" Us. Childproofing supplies are also sold by mass merchants and online at onestepahead.com.
Pressure-mounted gates (which won't put holes in your walls) are safe only in flat areas away from staircases. Gates are better looking than they used to be; try Summer Infant's Sure and Secure Deluxe Walk-Thru Gate ($60; summerinfant.com).
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