Amazon cuts 35% or more off a selection of K'NEX, Tinkertoy & Lincoln Log toys. Plus, Prime members receive free shipping on all orders. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping starts at around $7.) Deal ends March 20. A couple of best bets:

• Tinkertoy Essentials 100-Piece Value Set for $18 (same at Walmart, $14 low)
• Lincoln Logs Oak Creek Lodge Building Set for $19.82 (pictured, same at Walmart, $12 low)