I put everything I didn't want Gabe to mess with in a single room, and put a latch on the outside about 5' up. When I was in there, I put a baby gate across the doorway so he could waddle over and hang out but not get in there and mess with wires and stuff.
When he was 2, I got him his own computer, tablet, ipod and phone.
Be fearful when others are greedy, and greedy when others are fearful. Just another form of "buy low, sell high" for those who have trouble with things. This rule is not universal. Do not buy a 1973 Pinto because everyone else is afraid of it.