If you missed the Amazon sale, Barnes & Noble is offering 20% off any one item (use code DECEMBER20) , including the littlebits kits that they carry. This includes the cloudbit starter set, which is the one you need for IFTTT compatibility.
The following is a repeat of the general littlebits information I posted under the Amazon deal yesterday:
These are basically Legos with electro mechanical parts. No soldering required, so you can use them over and over for multiple projects. Great for kids. You can add the cloud bit to most constructs and they have their own IFTTT channel, so you can get SmartThings integration that way.
Also check out the manufacturer site for a great gallery of projects for kids