"Rotate your toys. Don't have all the big ticket stuff out at once — put the train track away for a while, replace with toy kitchen or doll house. Hide one away and replace with another when your kid's interest fades. Same for jigsaw puzzles, books, etc. That way there is always something 'new' and you'll be less tempted to just buy something to combat boredom. Also, scavenge! I shamelessly drag huge empty cardboard boxes home from outside shops, (I ask first if I can take them), and they become dens, or rockets, or whatever. Old cardboard tubes, packaging, add to the fun." —anniebymyaga
Get these toys from Amazon: train tracks for $22, doll house for $40, or a toy kitchen for $70.