I'm considering jumping back into the rabbit-ownership pool once my quarantine ends.
All of the above, especially re the cable chewing. The chewing issue is worse when you have bored rabbits, so the answer there is to have a pair (if you're getting them from a rescue place, they may even have bonded pairs ready), and make sure they have lots to do. Rabbits are very playful, and bored rabbits will start chewing everything, "digging" your carpet, and engaging in dysfunctional behaviours like pissing on your feet
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You do need to protect cables - as others have said, getting them up off the ground and out of the way of curious noses is a start - I am planning to enclose any cables I can't completely isolate from potential bunny-nomming in trunking (that square stuff the shonky electrician uses to run you in a new socket when he CBA to chase the cable into the wall), which I may even liberally paint with one of those Bitrex-containing deterrent gunks.
Rabbits need a surprising amount of space - if you're keeping them in a cage, it needs to be a decent size so they can still move around, and outside rabbits need a good sized pen to be able to exercise properly (when you first see a rabbit doing its M8d Run thing, you'll see why. House rabbits can have the home as their "run", so that's less of an issue. It's still worth having some kind of cage or enclosure for times when you may want them out of the way, but you shouldn't leave them shut in there for too long.
Don't go mad on the sugary stuff for treats - tiny bits of fruit, but not loads. Rabbits have quite finely-tuned digestive systems, and it doesn't take much of anything except (good quality) hay to upset that balance. I'd occasionally give Dylan a grape to attack, but stayed away from stuff like biscuits, etc...which they'll love, and happily eat, but which aren't good for them. Rabbits get diabetes, too.
The rabbit shit you see them leaving around is actually recycled rabbit shit - by the time you see that, it's been pooed and eaten once already. Rabbits get around the perennial breaking-down-the-cellulose problem by having a very big caecum part to their gut, and letting the bacteria in there break the cellulose down into sugars - this is sometimes called "night-poo/faeces/etc". It is really important that the rabbit gets to eat this, or it will quickly become sick. So if you find quantities of big, shiny glossy rabbit poo around (probably in the hutch), that's likely to be indicative of a problem.
IMPORTANT - get them vaccinated. Myxomatosis and RHV (rabbit haemorrhagic virus) particularly. As prey animals, rabbits are very good at doing the "yep, fine, all peachy here" before suddenly keeling over and dying. You don't get a lot of warning. And diseases like the above are far better inoculated against than having to deal with if they occur. Likewise, neutering/spaying. Rabbits LOVE to shag (even when neutered), and if you're unfortunate enough to end up with a mixed pair, you WILL have many babies. The other thing is that the reproductive bits are notorious in life-fast-die-young species (like rabbits) for cancers and other problems. Whip 'em out. Also, if you do it early enough (check with your vet), you tend to stop the more aggressive territorial behaviours and mounting/dominance bullshit from developing too far.
Um. What else? Oh yes. Rabbits are fucking brilliant. Because they are so social in the wild, they are very good at picking up vibes - if you are angry, they will keep away, and/or stomp; if you're miserable (and you have a nice rabbit), they will probably come and see how you are, do a little supportive grooming. Dylan used to come and nibble my hair if he thought I was miserable, and he was usually right...
I could probably write a post three times this length on rabbit behaviours, but I'll spare you that. For now, muahahahaha.