i need help connecting some solar garden lights?

i have a 3 set of solar garden lights i got at a yard sell i have tested them and know that everything is working i have no base so i want to turn them into a desk light by connecting all of them together i kind of know how to do it but not 100% sure need to know were i go so that i can see how to connect them together thanks and please if u don’t know how to do it or were to get the info don’t post please

Put them together mechanically. A bit of simple carpentry. leave them separate electronically. No gain I can think of wiring them together. Have fun.