Here's a sign that's 60" wide. By a remarkable coincidence I have two pieces of pegboard that are 30" wide. This rendering shows 100 white pixels and 97 yellow.
I'll probably buy two or three* 100-light strands of red lights, if they're available cheap this season.
( I've made a diagram that can be printed out to place the lights.Collapse )
I took the "LOSCON PARTY" sign to Conjecture, and it worked out very well.
* However, it's more fragile than a glass cactus, and a dozen or more bulbs snapped off and had to be replaced before the party began. I already had a spare string I was using as a parts source, so I decimated that to get the sign back online. In future, I'll either transport it completely wrapped in bubble wrap, ideally in its own vehicle, or I'll wait until I arrive and then spend an hour or two placing the lights. And bring spares.