To add a Gadgets click [Add a Gadget] to select and enter the new gadgets on your blog. To remove the gadgets you do not need is click on the [Edit] and click [Remove].
You can choose the gadgets needed more than 20 gadgets provided by the blogger. You need to click on the [+] to include the gadget on your blog. You can explore all these tools later and choose your gadgets with a specific function to fit your blog.
There are more than 1000 interesting gadgets you can use. You can click on Basic, Featured, Most Popular and More Gadgets for a gadget to your blog. The device increases from time to time because Bloger.com let users develop their own gadgets.