Daniel Knighton/ Getty ImagesMy 8-year-old loves Lego blocks and has been asking for years to go to Legoland.As a single mom, finances can be tight, and I needed to figure out how to make it happen.At the start of every day during our trip, we talked about our budget and how to spend money.For years, my 8-year-old son has said he wants to be a master builder for The Lego Group.