This Saturday, February 10 from 12-2pm local time, Toys R Us will be holding a LEGO Heroes Needed Build & Play Event at all locations. Kids will be able to participate in a super hero mask giveaway as well as building with LEGO to create something unique. You can also get a one-day, in-store only coupon for 40% off selected LEGO sets. You can do reservations but you can also just show up as well. The main draw of the even is the 40% off coupon but it also depends on what sets you can use it on.