Keeping your kids' electric toys humming is a battle, but Eneloop's leading the charge! The reusable batteries in this kit come fully powered right out of the box, and each one has 1,000 times the lifespan of your average alkaline. You get 8 AAs, 4 AAAs, one pair each of C and D adapters, plus, of course, the charging unit. And unlike many rechargeables, these ones keep their power for up to a year, making them handy for emergencies.
Available at: Costco stores nationwide