Having done some myself recently for the first time in awhile, I thought I'd share and see how others do it. I personally only have one way for self bondage.
A simple rope hogtie (hands to feet) with my big toes tied together. I use a blue whiffle ball gag, and either tape or cloth blindfold (whichever I can get my hands on, but I prefer cloth). I usually lay still, rolling over every few minutes, with a bit of struggling to keep my interest. I don't have a timer, and just stay tied until I want to get free. This is usually between 30-60 minutes, but has gone up to 90 minutes.
Since I'm quite flexible for a guy, a bit of work I can get my hands in front to remove my gag and then use my teeth to undo my hands. Not very complex but it suits me.