I may have a solution for you, since I also have tried to figure out a way to do it and be able to get out by myself... and it worked pretty well

What you need is something to tie your ankles, something to tie your wrists behind your back which you can get loose by yourself and some kind of luggage strap with a self tightening buckle like the buckle shown in this pic or here. You can use a strap like this to tie your hands behind your back as well. Luggage straps with this kind of self tightening buckle are very convenient because you can make a loop first, put your wrists through it and then pull on the free end of the strap to tighten the loop. To get yourself free again, you have to press the buckle and pull your wrists to loosen the strap, so make sure you can always reach the buckle with your fingers.

Like Ozme I suggest trying it in front of you first to make sure you get yourself out again. You don't want to panic and not get out anymore. Try not to pull it completely tight at first, to find the best way of getting that buckle positioned so you can always reach it.

If everything is fine you can now get your ankles bound and your wrists tied behind your back. To get the hogtie you need another such luggage strap. Tie your ankles together, but not your wrists yet. Make a loop with one strap which will be for your wrists later. Take the second strap and pull it through the loop at your ankles, then through the loop for your wrists and then through the buckle to make a new loop. Now you can put your wrists through the wrist loop (behind your back), and take the free end of the wrist loop to tighten it. Take the free end of the other loop, which already connects your ankles with your wrists, but still allows you to move freely enough because it is not pulled tight yet. Lay down, face down, and pull the free end of the loop which will pull your ankles and wrists together. Make sure you can reach the buckle of this loop, so you can get that loop loose again. Congratulations, you are now securely bound in a hogtie

The only thing I find is that the strap cuts in your wrists too hard so you can't stay in it for too long or you'd cut your blood flow. Otherwise hope it helps!