Using an old microwave transformer, one can build a low voltage high current spot welder for less than $10 in parts.
I would be interested in a how-to on this.
If you don't want to weld you can wrap the wire by looping it around the joints tightly. You'll need thin gauge wire but since it's a home display it doesn't have to be super sturdy. A bit of epoxy or whatever at each loop should keep it from sliding around.
One note about rope lights is the non-led ones use a ton of electricity. Also I've yet to buy one that's lasted more than 5-7 years, which is actually pretty good, but you'll have to throw the whole rope out when a section goes bad as there isn't a cost-effective way to repair them.
There are these remote controlled boxes to "animate" your lights that they sell every year for around 20 bucks. All it really consists of is a switch box with three outlets that allows you to blink each outlet in sequence, fade them all, do "demo" effects, or fade from one to the next. For simple neon-style effects that shold be more than enough... thrre frames of animation essentially. You'd just need cords to hook all the frame one strings into the first plug, ect.... I use them and they are pretty reliable.
The only thing is when ever the switch box turns on, it defaults to all on, so you have to get out the remote and set it. This could easily be fixed by wiring a ac switched relay to the proper button on the remote and hooking it up to your timer.
I hope some of that is useful.
