Number Barn? You can park a number with them for $2/month and have SMS and a recorded voice greeting (but no call forwarding), or for $6/month you can have call

Number Barn? You can park a number with them for $2/month and have SMS and a recorded voice greeting (but no call forwarding), or for $6/month you can have calls forwarded to you. You might be able to get something with a prepaid cell phone plan - at one point one of the carriers had something where purchased minutes didn't expire for a year after you'd passed a certain threshold, but no clue what it's like now - I haven't had a prepaid phone since the early days of analog to digital conversions. Some of the dirt cheap voip carriers like magicjack might also have options but no idea what they charge. Finally if you're on T-Mobile and don't have any free lines you might be able to add a line free, if not right now then when they do promotions somewhat regularly. The days of tons of free lines are gone, but if you have 2+ paid lines and no free ones they'll likely have a promo for you soon (it might actually reduce your bill because a free line still counts as a line for autopay discounts).