You can create Favicon (Favorite Icon) in MS Paint,Create your Unique Icon on your website.When people come on your website they will identify  your site and bookmark it.

Favicon is used for your site  tab look and people have recognize your site always 

Follow These Few Steps Create Favicon in Paint

Step 1

Go to the ms Paint,Open the Shortcut

Pressing Windows Button +R . This is for Run Commend on Windows Platform

Type mspaint Click Ok

Step 2

You can customize size of width and Height,Blogger accepting only for Square 

images so selects the Resize Button.

Change the UN Tick the Maintain aspect ratio Check box.

Select the Pixels Check Box, I will Choose 200 X 200

See the below screen Shot How did this step

Step 3

If you want to Background color add the fill with Color Menu,Choose the Background color.

Type one or two Character,you like your website name first letters or between letters is the best Favicon.I will choose T Because my website name is Techboz I choose first letter. 

See the below screen Shot How did this step

Step 4

Save the image Favicon.ico extension.

Step 5

Open your blogger Dashboard > Layout >Select Favicon Edit 

Choose the created favicon.ico file and save it