Baby proofing our house has involved so far: 3 stairgates (prevent kitchen access, climbing up the stairs from lounge and safety in Noahs bedroom), I have the TV on the wall above the fireplace and all electronic gadgets on a high shelf, well away from the little man.
My lounge is quite big, so I have been fortunate, but I have basically split it in to 2 areas: adults and toddler. His half has toys, ball pools etc etc, I have turned the radiators down, locks on the understairs cupboard, hidden plug holes away from him etc. All his toys are in low level boxes on shelves and adulty drawers are high up (well out of his reach). The fireplace isnt used, so I do not need to worry about coal or Noah hurting himself with the heat etc, but we keep the dog beds infront of the fireplace to prevent Noah from wanting to go near it as other people may use their fireplaces etc.
The only current hazard I have is that Noah climbs onto an armchair and onto the windowsill, where he pretends to be a dog or a cat. I have removed everything off of the windowsill - so he cannot get anything and we are learning "NO" to stop from climbing up there... which doesn't always work as you can probably imagine.