You dare raise the DEVIL!
Here you go...
Quasar 3C273, in Virgo. The brightest quasar available to amateur scopes. It's been photographed by one or two IIS members. It isn't an impossible target, but it is a lonely 'star' in a field that lacks particularly bright ones. Should prove a real "put hair on your chest" one,

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Markarian's Chain, in Virgo. This is a 'chain' of brightish galaxies. It is a section of the Virgo group, and the component galaxies include one or two Messier numbers, including the giant M87. How many can you see? Some intrepid fellows have even composed wide field sketches of this curved line of galaxies, using only a 76mm refractor, noting 14 galaxies in the one field. Go on, surprise yourself and satisfy your thirst for galaxies.
Eta Carina & the Homunculous Nebulae, in Carina. Eta Carina is an oldie but a goodie. BUT don't just give it a casual glance. This monster is highly detailed. Chase down the many dark pillars, clusters of young, super hot stars, shock-wave fronts, AND Eta Carina itself. This super giant star is expected to go super nova soon, and its precursor eruptions have created the Homunculous Nebula. You'll need magnification over 100X to begin to make out the lobes. Try to tease out the filamentary details here.
Centaurus. This constellation has so many treasures. Its frontline gems are the globuar cluster
Omega Centauri NGC 5139, and the galaxy
NGC 5128, and the
Alpha Centauri complex. In the midfield there lies the planetary nebula
NGC 3918 the Blue Nebula, and the more 'normal' globular
NGC 5286. Its backline is formidable, galaxy
NGC 5283, the naked eye
Coalsack, and the lovely and colourful open cluster
NGC 3766. These all present their own challenges. Some are best at high power, others are difficult to find, and others form exciting juxterpositions in size for the same category of objects.
Like more? Just ask.
Mental.