Bootsy Collins

In this June 20, 2020 Fender video at 2:51, Bootsy shows off his original P-Funk bass from 1971.

Bootsy Collins collaborated with Warwick to design the Bootsy Collins Spacebass, a star-shaped electric bass, as showcased on Warwick's official website.

This Bass Player interview states that Collins uses a Warwick Bootsy Collins Infinity Signature Bass.

"...once I landed my first real gig with James Brown the Godfather of Soul, he and I decided: "Well, son, I think it's time for a big-boy bass...." He bought me my first real bass, a Fender Jazz, the Bomb..."

Used with James Brown and on World Wide Funk, as stated by Collins in this November 23, 2017 Premier Guitar interview.

Did you have a Vox bass with James Brown as well?

Yeah, I’ve still got that Vox bass [an Apollo IV] and I played it on one of the songs on the new album—I can’t think which one it was off the top of my head—but I played it on one of the songs and man, I mean, nothing sounds like that. It’s like a dead-string sound—those old flatwound strings on top of that hollow Vox bass guitar. It’s got a built-in fuzz on it and a built-in tuner. It was incredible. I used a lot of different things on this record to try to give me a facelift. I’m still keeping the old stuff, but I’m adding a little newness here and there. On different songs, I use different pedals as well.

Featured in this September 10, 2015 Facebook post.

Man, I just got my Eastwood EEB-1 Bass today, looks like my 1969 Ampeg unright style bass, which was designed to be more of an electric Upright sounding bass. The Eastwood is designed to be a modern day put the funk in yr face, rock in yr roll, Blues in yr Happy , kinda bass. Click here to see what they got: http://www.eastwoodguitars.com

Visible throughout this June 20, 2020 Fender video.

One from 1969 is visible in this 1990 photo of Collins taken by Ebet Roberts, as sourced from this November 23, 2017 Premier Guitar interview. it also appears in this September 10, 2015 Facebook post.

Facebook

Man, I just got my Eastwood EEB-1 Bass today, looks like my 1969 Ampeg unright style bass, which was designed to be more of an electric Upright sounding bass. The Eastwood is designed to be a modern day put the funk in yr face, rock in yr roll, Blues in yr Happy , kinda bass. Click here to see what they got: http://www.eastwoodguitars.com

Premier Guitar, "Bootsy Collins: Bass from Outer Space"

Collins is known for his colorful costumes, but it doesn’t stop there. His bass tonal colors helped define the funk genre. “It’s kind of like painting,” he says. “It’s like, ‘I don’t like that color. Let me try another color.’” He’s shown here in 1990 with his 1969 Ampeg upright bass. Photo by Ebet Roberts