Ah. I see. I do my greetings with single alphabet stamps but it's a lot of work. I have to clean around the letters before I actually stamp them. I'm not sure if that's because they were cheap or whether all rubber stamps are like that.
It's frustrating when you've given something away and then feel you might want to use it again. I did the same with a manual typewriter. Got rid of it because I wasn't using it much and then found I wanted to use it many times since. I've just had to find another way each time.
I had a small collection of stamps, not way too many and half of them Christmas where I stamped the envelopes of the Christmas Cards I used to send. I only kept about 3 and one red ink pad and gave the rest to my sister because she likes to use them sometimes. I truly had nearly not used them for years, not even once a year, so during the last re-organize spree I decided to let them go. I don't let things go fast, but it seemed so senseless at the time to keep them.
I have seen a set or two of the letters and numbers, but haven't chosen to buy any yet, but of course should something I wanted to do call for some, well I knew I would buy some. The birthday stamps hadn't crossed my mind till we were talking about the birthday cards and naturally, how I would get words on them was the next thought..... that lead to.... oh.... birthday stamps..... birthday stamps I don't have anymore ! LOL... oh well