Ritual of Terror has a mechanic that requires 4 clickies be used in certain areas within a few seconds of each other. Not ideal for boxing, but it is doable. The rest of it is totally free. Just kill mobs until bosses spawn. Kill bosses.
Tick Tock is really easy. There is a 'kill order' in each room, but there's only 4 mobs in each room and you have plenty of time to just stop for a second and make sure in between each room. I soloed this with a 115 ranger easily, so it's just free loot ---Very Important Note--- The chest at the end needs to be lock picked. Zam says you can't use Archaeologist's Automated Antiquity Analyzer, but I'm fairly sure that's exactly how I got into it.
Unfortunately the step down in gear means the next best raids to T1 HoT aren't nearly as good. Underfoot was a no level increase expansion at 85 and all(?) the raid gear was req 85. So you have to go back to SoD raids to have any other raid options for level 80. A full year gap in gear means the gear is quite inferior to HoT raid gear. The being said, T3 SoD raids and prior are all req 80 or lower gear. All of the T3 SoD raids were ranger soloable at 110, but one does have a balance mechanic which is a little annoying with todays DPS.