How would I take tools then give them back? {More info in body}

In my game im trying to make it so when a player is in a certain, either; -Tools are hidden/disabled -all players in that area are given unlimited health -etc

Im trying to make it so a players tools will be taken from them when they die/enter the lobby, but given back when the next game starts. Any tips or snippits on how I would do that? Thanks!