Not a bad idear for a post, in the generalities sense.
1. Compressor (currently using a Toadworks Mr. Squishy on the live board, also dig the Visual Sound Rt 66, the BYOC multi, the MXR Custom, Pigtx Philosopher, even the Kokko, just now in the last 5 minutes took delivery onna BBE non-mustache opto I’m looking forward to trying; note that compressors can be used to control level, or change tone, or both – different ones do different things; BTW, you can often use a compressor – with the press turned down – as a boost)
2. Boost/OD (love the various EHX mini’s, especially the Hot Tube what can also be about distortion, the Pork Loin and the Blackstar blue are on my live board, the Blue Tube is worthy and the Real Tube, I also like the Radial Marshall thingy as a boost or even a Distortion + or 250, and those huge Ashdown pedals sound really good, but are unweildy)
3. Filter (so many to choose from, I currently have a modded mini-POD, a Meatbox and a Bass IQ on the live board; I sometimes slip in a Dr. Green Dr. No, or a Malekko green, or a Multiplex; the Knockout is a cool bass-boost filter, sorta like the bottom of the Meatbox)
4. Distortion/Fuzz (MXR Bass Fuzz and EHX Bass Muff currently, but I switch in other stuff like various Malekko [B:assmaster variations] or Zvex pedals [Super Dupe, Distrotron, BoxOfRocks], or a EBS multi, Bass Blogger, even a Rat2(LM) or Grunge …)
5. Modulation (currently have a Bass Clone and a Small Stone – nice and simple and clearly audible but not overwhelming)
Now, I have a cuppla boards, and one that is a few different Source Audio pedals, and you could get by with just 2 or 3 of those because they are multi’s. Or as someone said above, you could use a Zoom MS60b … I have a board built on amp emulators like the Tech21 VT and some Joyos (American Sound, California) that is useful for late-nite DI, too. Me, I find that stuff great for recording, mebbe jamming, but in the trenches, I want my pedals dedicated to one tweakable sound. My board is 11 pedals plus a wah (Rocktron Tri, currently) and while I can’t get a full-on Bootsy I can get close … I note I only ever use delay or reverb on bass on specific songs, typically slow and sparse ones and so currently only for recording.