Are you tired of stepping on building blocks? (Ouch!!) I love this clever way of keeping them off the floor and out of your vacuum!  Amazon has this Toy Storage Bag Play Mat for just $14.99!

• CONVENIENT: 60″ Diameter Floor Mat Opens from a Convenient Drawstring Shoulder Bag, Providing a Clean, Safe Play Area for Children, and When Closed it Stores Toys Inside, with a Strong Polyester Loop to Hang it Up!
• STRONG: Attractive Bright Blue Storage/Play Mat is Made from Durable Polyester, and Sewn with Reinforced Stitching, with Drawstring Cord and Cord-Lock, so Your Play Mat isLong-Lasting and Easy to Open and Close in Seconds for Playtime Fun.
• ORGANIZED: Floor Mat has Sewn-in Mesh Pockets, Providing a Place for All the Small Toys and Little Pieces and Parts from Toy Sets, So When You Open the Mat, Everything Inside is Organized and Won’t Get Lost.
• GREAT GIFT: This Storage/Play Mat Makes Life Easy When You Take It Along for Visiting Family and Friends, Going to the Beach, Picnics, Camping Trips, or Sports Events, and Makes a Wonderful and Practical Gift for Families with Young Children.
• LIFETIME WARRANTY: We are So Sure that You are Going to Love this Versatile Portable Toy Storage Mat, that if You are Not Satisfied for Any Reason, We Will Refund Your Money with No Hassle, and No Questions Asked!

This will keep the blocks in one place while the kids play and then you can close it up and get them put away in just one step!