So basically, instead of throwing a bunch of $$ to everyone every month and hopefully inflation doesn't happen, give everyone a basic condo with a reasonable number of electrical appliances in an UBI apartment (being UBI doesn't mean low quality, it should mean reasonably good quality but without those fancy stuffs), send everyone food package every week, free library card, free online university admission (they don't have to take them if they don't want to), etc., and maybe a bit of $$ just for entertainment and such.
However, I think it's more important to help people to find meanings in their life. If I get UBI but feel lost, how do I find a sense of belonging? How do I find meaning in my life? Sure, if I'm smart or if I'm affluent, I might get into some really meaningful and well paid jobs, but UBI does not magically give people more job, it merely gives them more time to figure out -- and a life of time is not enough without guidance and help.
To help people find belongings and feel "being useful", the government can also encourage volunteering, mass infrastructure maintenance projects, and promote many other activities, so people can earn some pay, learn some skills AND find meaning in their life.