is there a way to trade options/spreads so that the money is invested relatively risk free, so as to make a profit regularly and consistently

you can set up some calender spreads that are risk free but with the very low to no risk you are also not getting very much in return.

Iron Butterflys

Iron Butterfly Explained | Online Option Trading Guide

You can make money during the trade if the underlying stays flat for a while, you don't have to wait until expiration. I've seen opportunities with /ES options with a risk/reward of 1/19 and you could earn 1/4 after just a 5-7 days of decay.