As of 2015, some of the most popular "Thomas and Friends" toys are the Fisher-Price "Thomas and Friends" wooden railway lights and sounds ironworks, the Thomas wooden railway "Grow With Me" play table, and the Fisher-Price "Take-N-Play" set, according to Toys R Us. All of these toys are appropriate for children ages 3 and up.
The "Thomas and Friends" ironworks allows children to pretend to melt scrap iron into molten iron and then pour it out. The toy features lights, sounds and a durable paint job. The toy also helps children develop gross motor skills as well as sensory and thinking skills and is compatible with most wooden railway track pieces and toys.
The second most popular toy on Toys R Us is the "Grow With Me" wooden railway table. The table comes with a double-sided top that the child or parent can flip. It also comes with a drawer in which the child can store her toys. Like the ironworks toy, this table is compatible with most "Thomas and Friends" wooden rails sets.
Finally, the "Thomas and Friends" "Take-N-Play" set lets children load up die-cast replicas of some of the most popular characters on the show and take them anywhere. However, trains in this box set are only compatible with other "Take-N-Play" track pieces and figures.