I've had rabbits (Thumper being the one I remember), Rats (Skittles, Twix, Gummy Bear, Black Liquorice, Toffee.), Hamsters (Nomad and Jewels).
I've cared for a bunch of other small animals too. I'm hoping to have a hedgehog in the future soon... maybe some mice or a Guinea pig or two. Who knows. I do have another rabbit planned for the future.
Currently I have two hamsters (going to be 3 in July since I'm taking in a female syrian from a friend of mine.)
I've got Rasputin the Russian Dwarf hamster (Winter White hybrid most likely but sold as a WW).
And I've got Lenin the Silk Syrian.
Raspy is a little spunky dude. He bites me when I hold him (or nips until I'll put him down), he's survived the dogs breaking into his cage and pulling him out. He's a tough little guy - currently a little over a year. Lenin is a slightly friendlier hamster. I haven't socialized him as much as I should but I try to sit with him for 5-10 minutes 2-3 times a week and to pet him at least once a day.
Raspy is probably my favourite out of the two despite his attitude LOL. He was the first hamster I've had in a LONG time.
If reptiles count as small pets as well I currently also have:
6 Adult leopard geckos (Zhen, Dharma, Blanco, Sparks, Ms.A and Phantom.) (I breed leopard geckos)
3 Gargoyle geckos (Meliae, Kronos and Eos.)
1 Bearded dragon (Bentley)
1 Crested gecko (Gaia)
1 Corn Snake (Atlas)
I've recently downsized though and I'm missing my little buds. I used to have 5 ball pythons but where I'm moving doesn't allow for any Python or Boa species - so they couldn't stay since I have no other options. I also had 2 tarantulas and 2 scorpions but I couldn't keep them either (same reason). I had 4 more adult leopard geckos but they weren't needed anymore. But yeah. The number I have now is good. Other then the hamster coming in July I have no plans for small mammalian pets until the hamsters pass.
None of my reptiles are very old yet. Zhen turns 5 this year... so he could have another 25 in him lol. He's the oldest by a year. With Eos and Kronos being the youngest born last year in late summer.
But yeah... I love small pets. They are an awesome option for those with little space.