Looking for some canoe bungees, paddle clips, etc... to outfit my new boat. Tons of stuff online, but wondering if there are suggestions. Bungees would need to stretch to 24". What else should I get?

Nite-Ize twist ties are handy sometimes.

What canoe? Why 24"?

I've used this style paddle clip for years now and none have ever broke. Piragis used to sell them branded as Bell but now I see that they do not stock a 'paddle clip', or at least it doesn't show on a search. They were $6/pair so cheaper than those that I have linked to. I installed a set under each side of my seat so that I wouldn't have to reach across if I exited the opposite site and my spare usually occupied one side anyway. Be careful when you mount them as it's easy to put them in the wrong location. I use small stainless steel wood screws. Mark the location, take the seat out, install mounts etc

couple of thoughts before you "pimp out your ride". Yeah, it's neat to have organized storage gadgets in the canoe, but then you have to portage that canoe and you have to decide to portage it with 15 extra pounds of gear dangling around in it.....snagging on every tree branch OR....unsnapping all that stored gear and hand carrying it or attatching it to packs. Second thought is keeping the inside of canoe snag free from catching pack straps, pants legs, fishing line....etc. Over the years I've cut back on the "loose" items to ease and speed up portaging. A water bottle and map case get "beenered" to a pack and my paddle has some elastic cord slots I quickly slide it under. My spare paddle is held in with the above mentioned twisties. A small under seat bag has camera, rain suit and 15' of rope (snugged up tightly under seat). Clean and neat and quick.
That said, there are some older threads on drilling holes in thwarts and weaving some elastic cord or screwing in some "pad eyes" to hold some BDB's.
I also use a pvc tube system and BDB's for my fish pole. I feel they are safer in canoe than being carried.

Bannock, it's an old town Osprey with a 3rd seat. Will be used both solo and tandem, so I want to figure out ways to secure paddle, fishing poles, etc.... in either paddling position. 24" because that is the distance across the seats to the supports. I thought d-rings mounted on either side would allow me to run bungees across whatever seat I'm not in, holding poles or paddle underneath to keep them in place.

I'm all BDBs all the time. Lash rods and paddles beneath thwarts, thwart/bow bags stay in, and PFDs are zipped around seats for portages. Everything's then inside gunwales and portaged snag-free.

I like using old nylon strap material and making attachments below the gunwales. I'll post a picture or two of what I'm talking about. Very handy.

For paddle holders, I bought a couple of the velcro ones from Piragis in the '90's and they're still fine. I expect them to outlast ME? The ones they sell now look a little smaller, but I'm certain they're fine?
Paddle Holders

I've bought the stretchy bungy cord off E-bay and attached them to thwarts and yokes. You can also find it places like Austin Kayak Company (lots of canoe and kayak outfitting gear there). I PREFER BDB's though. They work better and are less hassle. Plus, you're supporting one of "Us," a paddler who paddles the BWCAW.
BDB's
Here's a few outfitting pics:

quote cowdoc: "couple of thoughts before you "pimp out your ride". Yeah, it's neat to have organized storage gadgets in the canoe, but then you have to portage that canoe and you have to decide to portage it with 15 extra pounds of gear dangling around in it.....snagging on every tree branch OR....unsnapping all that stored gear and hand carrying it or attatching it to packs. Second thought is keeping the inside of canoe snag free from catching pack straps, pants legs, fishing line....etc. Over the years I've cut back on the "loose" items to ease and speed up portaging. A water bottle and map case get "beenered" to a pack and my paddle has some elastic cord slots I quickly slide it under. My spare paddle is held in with the above mentioned twisties. A small under seat bag has camera, rain suit and 15' of rope (snugged up tightly under seat). Clean and neat and quick.
That said, there are some older threads on drilling holes in thwarts and weaving some elastic cord or screwing in some "pad eyes" to hold some BDB's.
I also use a pvc tube system and BDB's for my fish pole. I feel they are safer in canoe than being carried."

I agree with everything said above^^^^^^^ Adding gadgets adds weight faster than ya' think. When we travel the canoe is basically stripped down for travel except maps and water bottles that get caribinered to the packs and off we go.

The more trips I've done, the more I've also become like cowdoc and BnD, keeping loose items to a minimum to simplify the portaging process. I do travel vs. base camping, so it does make a difference. And I don't fish, which greatly simplifies things. I rent a canoe there, so I just use the twist ties for the paddle. The map case "beenered" to a pack and I have a 2nd smaller pack and a water bottle. Everything else is in the packs or a pocket.

It worked pretty smoothly last trip - I'd put large pack, PFD, paddle and water bottle off to the side, then I'd put on small pack, pick up canoe, and go. Come back for second load, put pack on, slide arm through PFD armholes, grab paddle and water bottle, and go. I drank water on the go from a Sawyer bottle. At end, put canoe in water, packs in, paddle and water bottle, and I'm off.

I'd probably put a little bungee on a canoe I owned, but wouldn't have much use for anything else - painters are BDB'd to thwarts (might put in tugeyes if I owned). Some of that may seem like heresy, but it worked so well last trip that I don't plan to go back to the old way.

Yup, I think Cowdoc BnD are on to something. "Everything in a pack". Cut canoe weight and hand junk! Much more Efficient Portages.