I was wondering why we don't have a teambuilding thread that has Walls, Spikers Hazard Inducer etc etc like every other tier?
In UU in particular, making a "grocery list team" isn't terribly viable. A helpful start is the Cores thread. When I started UU, I literally grabbed a core from the thread and then picked three Pokemon that provided the rest of what I needed in a team and then went to town, constantly making changes.
Though to be a touch more helpful, here's some info on various Pokemon good for various roles:
Spikes
Roserade - Probably the best Spiker in the tier just because Roserade is awesome. Can tank special hits and seriously threaten Blastoise and Claydol with Giga Drain while they can't really hit back too much.
Frosslass - Your offensively oriented Spiker roughly analogous to a suicide lead in DP, but Leftovers and Pain Split can give it some defensive utility as well. Fast Taunt helps it beat a lot of leads.
Qwilfish - Not common at all, but it beats Heracross and gets Spikes up. Intimidate was seriously a gift from the gods for Qwilfish. It's also got access to Pain Split, Toxic Spikes (though those are terrible in UU), and Thunder Wave.
Stealth Rock
Bronzong - A generally useful defensive Pokemon since a lot of great Pokemon can't do all of that much to it (some Mew / Tornadus, almost all Snorlax, most of Flygon's moveset, etc). Among the million other support moves it gets is Stealth Rock
Rhyperior - An underrated tank that seriously threatens all it needs to with EQ / Rock Blast / Megahorn, leaving a perfect space for Stealth Rock there. Common weaknesses really drag it down some, but Solid Rock helps to an extent.
Cobalion - A unique Pokemon with both Speed and Defense, Cobalion presents a mixed offensive threat most of the time but can also lay down Rocks to thwart some of its own checks.
Swampert - Everyone's favorite tank (and long ago, The Best Starter), Swampert gets Rocks and is useful on many teams that lack a bigger Bulky Water. Beats the hell out of HP Ice Raikou and Zapdos too.
Azelf - You can still kind of run a suicide lead this generation, since Azelf is faster than Froslass and can score SE hits on Crobat, the only other fast Taunt leads in this gen. You'd probably want something else though.
Empoleon - A lot like Swampert but with a drastically different typing, Empoleon checks a lot of dangerous Pokemon, most notably Kingdra, and gets Stealth Rock as part of its modest support movepool.
Registeel - Not a great Pokemon, but a rare pure Steel typing and huge defenses make Registeel a potent tank that can Stealth Rock. Seriously ask yourself why you aren't using Bronzong when you pick Registeel.
Lemme know if you want any other lists that can't easily be generated just by browsing the website learnsets. I know SR is hard for that reason.