Light trick that I did last year - actually @conmama were you the one that suggested this?
Mix regular tree lights (white or colored) with a couple of stands of bigger round white bulbs strings - zig zag through the tree. We LOVED the way this looked last year! Really gave some good dimension to the lighting situation!
These are the ones we used last year - we used with multi colored regular lights. I have bought BOXES of these at the end of the summer season and doled out handfuls to my kids - I paid less than $2/box!
https://www.target.com/p/20ct-incandescent-outdoor-string-lights-g40-clear-bulbs-green-wire-room-essentials-8482/-/A-53804992