My suggestion for a God is:
Henry - God of the gaps
Not only is Henry the God ruling the spaces in between things, he is also looked upon as a jack-of-all-trades among the Gods. Whatever no other God governs is left to Henry.
This, of course, leads to slight confusion on occasion, since not all people agree upon what Gods actually exists, and furthermore exactly what God governs what.
Henry, though not recognised by any of the major religions, have a firm hold among a large part of the common people and is commonly blamed for small mishaps and lesser misfortunes.
The God of the gaps is the God of convenience, when not knowing who to blame, or knowing but not daring to in fear on angering a more powerful God, Henry is used as the scapegoat, since attributing any small thing to him is unlikely to anger any of the greater Gods.
Although you wouldn't let a priest hear you speak about Henry, it is not uncommon to hear something along the lines of: "I wouldn't be surprised if Henry had something to do with it" among neighbours and friends when speaking about some recent, lesser misfortune that have befallen someone.
Stubbing a toe, falling flat on your face in the public house, milk gone sour earlier than expected, accidentally dropping and shattering your favourite mug, losing a sock. You can't be sure, but it might be Henry.
In spite of this Henry is not looked upon as a mischievous God. It is thought that Henry is simply as unlucky as the mishaps attributed to him.