Tammy, that sounds all very familiar to me! Except I used a slip and a bedsheet instead of a leotard, pantyhose and blanket for those dreams.
You can do a self wrap with belts or straps over a blanket or sheet. While legs are easy to do, it's a matter of snuggling the arms under the wrap after the chest & waist belts are adjusted for the correct tightness. It may sound awkward but with some experimentation you can achieve a surprisingly tight wrap. The only downside is that it's not inescapable- for that you will need a helper (...and more straps or rope