Keep matches out of reach, and use a fire guard. Common sense for any child. Bruises are common but are usually superficial and not painful. Whatever you do, don't bandage the joints themselves. That leads to muscle wasting and instability.
All babies fall down but they are well padded anyway.
Nature provides them with that nice protective fatty layer that we all spend the rest of our lives trying to get rid of. The only area which is not protected in this way is the head, and one of the worries of growing up with active haemophilic youngsters is head injury. All toddlers bang their heads either by falling or walking into things. However, it is very rare for the ordinary knocks of everyday life to result in bleeding inside the head. I always encourage parents to have a child who has had a BIG bang seen by Centre staff because early treatment will prevent problems.