Yes, I have a couple of different models of the Lotus Elna, plus a Grasshopper. I love the fact that they are self-contained, and the old Elnas are great machines. However, they are rarer than some of the other compacts so it can be tougher to find a good deal on a Lotus in decent condition.
I also have an older Riccar that I got for $30 because Goodwill listed it as having no cord. I must admit, it took me a while to figure out that the cord is built in and retracts into the case, lol. I love the fact that the way this machine is designed, there is nothing to lose!
There are quite a few Featherweights on ebay right now, and some are going for pretty reasonable prices compared to last year.
There are several older models that would work well for this type of situation. and they tend to be far more robust than their newer cousins. However, much is going to some down to personal preference. I tend to prefer the styling of the older machines.