Oil Filter usually found on the engine block, the oil filter is designed to protect your car engine by trapping any large and potentially damaging particles in the oil. It's vital that your filter is kept clean, as a clogged filter can quickly prevent your engine form being properly lubricated. The advice is to replace.
Every player should have a ball. For the youngest kids (5- to 8-year-olds), a coach's number one duty is to make sure the kids are as active at practice as possible! The best way to ensure that the kids are active is to make sure every kid has a basketball (a practice I borrowed from youth soccer many years ago).
Indoor sports like basketball are a lot easier. Keep in mind that for kids leagues you need to schedule practices. Give each team at least 3-4 practices before the league starts. The big difference between kids and adult leagues is that kids need to learn the game first.