The Pillbugs: The 3-Dimensional In-Popcycle Dream (2003)
Stand-out tracks include the deliriously extravagant "Neo Mega Quasi Ultra Super Groovy," the sing-along bubblegum anthem "Heather," and the sophisticated XTC-like pop of "Girl On A Laser Beam." But it's truly a joy from start to finish, trippy headphone vibes and sugar-coated retro-pop. The CD is out of print and it doesn't stream on Spotify, but you can check out the audio rips on YouTube, and you can (and must!) buy the digital download on Bandcamp. (There's also a pretty sprawling Best Of on Bandcamp, which looks like a pretty great investment.) The band has since broken up, though singer Mark Mikel has a number of really nice solo albums out there as well.
Here's an audio rip for "Neo Mega...":
And for the streamers out there, while I don't think it's quite as consistently compelling, here's 2008's Everybody Wants A Way Out: