What Size Softbox for Still Life?

I've already purchased a couple of 24"x24" Godox softboxes for still life.  

Since I've got three studio strobes and three manual speed lights, I figured I might as well buy a third.

The question is, what size/shape?  Another 24x24?  24x36?  Octobox?

I won't ever be doing portraits, just still life.

Sorry, I don't think there is an answer here. How do you wan the light to look? Soft? Hard? Lots of ways to do both.

Different sizes and types of softboxes produce different types of light as K Soze said. It really depends on what you are trying to create. The options are endless.

I agree with K Soze, so much depends on the shooting scenarios. Still life can mean shooting lego people or shooting a 16 foot canoe. Each has different needs. With that said, as you have a 24x24, try something different.

Let me ad, if you want a different look, get something with a fresnel lens. I love my fresnels for still life. I have 4 1K hot lights for the studio and a small LED for travel and video.

At this point, I'm not trying to achieve a specific "look" as I haven't even unpacked the softboxes I have. What I'm NOT looking for is what you get from a light box, which I've already built. I'm interested in experimenting with different techniques of artistic still life rather than generic eBay advertising.

I'm not going to be photographing anything much bigger than a handgun or a bowl of fruit.

Temma, nevertheless what folks have told you, 'It depends...upon what you want to accomplish" is entirely true.

• you can buy a Fresnel lens unit to mimic a spotlight
  
• you can buy a reflector-only unit to mimic hard sunlight
  
• you can buy an umbrella or softbox to provide a source of 'soft' light
  
• you can buy a silvered umbrella for a more dramatic light than a white umbrella
  
• you can buy a snoot to put over a light to narrow the illuminated area to a cone
  
• you can use a piece of white foamcore to serve as a reflector
  
• you can use the same piece of foamcore to change a square box to a narrow rectangular source
  

Years ago, I bought: 2 33" shoot-through umbrellas, 2 33" reflector umbrellas, and 2 33" silver umbrellas. I have 4 stands. I have 2 small soft boxes. I haven't run into anything I wanted to do that I couldn't do with this gear, and a bit of imagination. Duct tape a heavy dish towel make a nice, versatile flag. A white twin sheet can be used for any size reflector you need. I use a mixture of 5 Canon 550EX and 580EX II units, and Canon's old visible light trigger system. It works... indoors.

I just use two $15 architecture lights I bought at Walmart, a 20 year old three light floor lamp for lighting, a tri-fold project board, poster board, and tissue paper to diffuse my lights. It's definitely a "different technique of artistic still-life." I guess my question is, if you've already got two soft boxes that you haven't unpacked yet, why buy a third even if it's a different size? I'm just curious.

I just bought a third Godox 24"x24", Godox S-mount, and Neewer light stand and boom. I haven't been able to try any of it yet since I'm still making room in my living room.