I LOVE Palette challenges! This is a rig I did and yeah it's for techno, but there's a way to set up Pam's so that you can use the CV in to change the loop length and you effectively end up with Turing Machine style generative patterns. Couple that with Euclidean for some fun. Add a Ladik Dual Probability Skipper for even more variation. You can also use Pam's in the same way to generate quantized CV patterns!

Also, for 1U take a look at the Mosaic 1U drums...they are really good. I use the Bass Drum and their Low Pass as a sub bass sometimes in addition to normal drum duties.