I like the Milani or Physicians Formula Shimmer Strips/Glimmer Strips. They kind of look like BB Shimmerbricks but in packaging that isn't as nice lol. Very glowy...not as intense as MAC, but I like them more sometimes. I will wear these during the day, but will only touch my MSFs at night!
Physicians Formula Baked blushes have also been compared. Baked Berry is compared to Stereo Rose a lot on MUA. I have all 3 of the Baked Blushes and I love them all. Again, they're more subtle than MSFs. These are VERY hard to find and have been dc/clearances at most drugstores but I still see them sometimes...I think at Target. Check somewhere that has a big PF section.
Also, NYC just made a product that is a dupe of them. They look similar with the some shape and same kind of packaging (obviously MAC looks nicer). I haven't tried them (haven't been able to find them!), but there are great reviews on MUA. I've been looking everywhere for these with no luck though, so they are probably mostly sold out/very hard to find. I'm not sure what they're called either, but if you search highlighters by NYC on MUA, you shouldn't have a problem finding it. These were also LE which makes it that much worse. Hopefully they'll get positive feedback from customers and make them permanent.
Wet N Wild All Over Shimmer 832D is amazing! Again, great reviews on MUA. I actually think I like this better than Shimpagne. It's kind of hard to find, but it is permanent and about $3. Comes in the same white plastic, square compact that the Wet N Wild blushes and bronzers come in. This, IMO, is a must have. I take it everywhere with me because I baby my MSFs.
I'm pretty good w/ DS stuff, so I will let you know if I think of anything else.