The icon with a jar is the Weiss capturing device.
I don't know what the bear like icon refers to
The cat icon references the design of Kanon's stun gun as it appears in the anime. (The stun gun has normal appearance in the manga). The icon matches the stun gun on Kanon's right hand in the image below.
According to KamiNomi Wiki:
The original shape of the stun guns were replaced by kitten-style appearance in the anime as a safety image.
The hexagon icon is the Maijima emblem, which is shown most clearly in chapter 169. For the purpose of comparison:
The last 4 icons are Hellian alphabet. Referring to below chart from this forum posting by EyZi:
The characters are G, O, N, K, in order from left to right, top to bottom.