Here's a another useful list for your summer outdoor parties. With LED bulbs and solar-powered lights becoming more accessible and online retailers like Amazon and Lamps Plus stocking huge inventories, there's actually a ton of good options out there that you can order today and have this week. Enjoy.
Galvanized European String Lights
These go for anywhere between $150 and $200 (available at Amazon and other online retailers). They use regular 25-40 watt bulbs, and they're nice and big.
→ 50 Foot String Light with 10 Galvanized Steel Shades for $160
→ 48 Foot Vintage String Lights with DROPPED Copper Shades and 15 Light Sockets for $146
→ Petal Shaped Galvanized Metal String Party Lights: These are smaller and they use 5-watt bulbs for a dimmer glow for $29
→ Cafe String Lights: These with a cute rounded shade, $39-$89
→ Vintage Dropped String Lights at 50' with 24 low watt lights on sale now for $156
Smaller Scale String Lights
→ String Bulbs 15' and 15 Light Set: Nice 2" round bulbs in clear glass, $24
→ Amber Globe Lights: Another version of globe lights, $49
→ Party Take-Out Box String Lights, $70
→ Round Paper Ball String Lights (10 lights), $17
LED & Solar
→ Resto LED Light String: These are awesome indoors and also usable outdoors it seems if the weather isn't too harsh, on sale from $9-$79
→ Solar String Lights by Solar Illuminations: These LED lights are solar powered, $90.
→ Simple Green: LED Lights for the Patio: This photo comes from Danny Seo's blog and shows strings of LED lights on his patio. The advantage of LEDs is that they're energy efficient and they don't burn out as often as regular bulbs.
→ String Lights Zig Zagging Overhead: This post gives ideas for ways to install your string lights.
Good String Light Sources (linked directly to lighting page)