Honestly? You'd be just as well to get them some tools from Harbor Freight. They'd be about as durable, probably cheaper, and Harbor Freight has a lifetime warranty, so you can replace the tools when they break.
One could buy a set of tools for a tool box at their local hardware store. One could also find tools at a store that specializes in specific tools. Of course one could also take an easy way and just find the tools they are wanting at a discount store or overstock store.
I could not find a replacement handle for the Fiskars Garden Tool set.
Some companies the make kids tool toys are: Toys'R'Us, which have a line of Home Depot toys, Little Tykes and Toysmith, which have gardening and lawn tools and Learning Resources, which has play tools and a belt set.
On average a Mechanic Tool Set tends to cost around $100. They can be purchased around this price at several stores such as Target, Amazon, HSN, and at Staples also.
you could buy that online.
One could buy a small dinette set from many different shops. You could buy it from the web, or from a physical store. Target offers one online for $93.
Some good places in order to buy those great "Dora the Explorer" kitchen sets for kids would be for example "Toys 'R' Us", "Kmart" and of course "Amazon".
One could buy the complete box set of the Three Stooges on sites such as Amazon and eBay. One could also buy them at local and department stores such as Costco and Walmart.
You can always sell it when they outgrow it. I am sure they would be happy to have a set of their own. Just buy one off Craigslist if it's money that you are concerned about.
Buy a set. They aren't very expensive in a set then you have them all. I don't know the exact size now, but I used the same type disconnet tool I used on my AC lines. You can buy a cheap set of hard plastic ones for not much $$. If you live by an Auto Zone or similar, you can "rent" them free, just pay a deposit.
You can buy a chemistry set at science supply stores, toy stores, online retailers like Amazon, or educational stores. It's important to ensure that the set is age-appropriate and follows safety regulations.
Apollo Precision Tools 39-Piece General Tool Set comes in Pink