We are really dragging our feet on this because I have no faith that my son will stay in bed on his own. But he's so big now, I think with just a bit more effort, he could absolutely climb out of his crib. And I don't want him to fall and hurt himself.
I don't want to buy a toddler bed because all of our friends who got them said that their kids were in them for less than a year and they were a total waste of money. And unfortunately, we didn't buy the kit to convert his crib to a toddler bed.
We have a daybed (twin size mattress) in our office and we've planned on this bed his big boy bed, but it seems awfully big now! And Warner is still all over the place in his crib and he usually ends up all crammed up in one of the corners.
I was kind of thinking that I could buy an extra breathable bumper (there's one on his crib now) and put that around the bars of the day bed. And then get one of these: https://www.onestepahead.com/catalog/product.jsp?productId=537078&cmSource=Search and also, possibly one of these: https://www.onestepahead.com/catalog/product.jsp?productId=534602&cmSource=Search
But DH was thinking that we should just put the mattress on the floor until he starts sleeping like a normal human being so we don't have to worry about him falling off and hurting himself. (and we won't have to buy as much crap)
What do you guys think? How did you do the transition?
Re: transition to a real bed
I would just do the mattress on the floor--and it could either be the twin mattress or the mattress from his crib--elimates the need to buy a bunch of extra stuff and reduces the potential for a rough landing as he gets used to a bigger bed with no sides to it. Once everyone is comfortable with this sleeping arrangement, you can put the mattress up on a frame (or go from the small mattress to the big mattress).
Another thought is for your crib, if it's a convertible crib, you probably don't need a "kit" to make it into a toddler bed--if it's like ours, you just take one side off. Technically there is a piece that you can attach to the side, but we never had that, we just put some blankets and pillows on the floor in case DD fell off. She fell off once and it's not up as far as a twin bed and it wasn't a bit deal.
GL!
we moved DD at 20mo old to a queen size bed, real bed, not mattress on the floor, it's in the corner, we have a rail on one side, a toy box at the foot of the bed. After she fell off, we put 2 pool noodles at the foot of the bed under the sheet and she has not fallen off.
Try to get Warner involved in decorating his new room/bed, picking out a pillow or sheets and making it seem like a really big deal.
We are not at that stage yet and I'm dreading it as well. One tip I read from someone is that you can buy pool noodles to put on the edges of the bed similar to those inflatable things in your link. The pool noodles won't be as big but just wanted to share that as another option for reducing the potential for rolling off (although I'd still put the mattress on the floor if you use those).
TTC #1 Cycle 14 - IUI#1=BFN, IUI#2=BFP | TTC #2 Cycle 8=BFP!!

We moved my daughter about a month ago, when she was just under 19 months old. It has been no problem. She is in a new room (her big girl room), with brand new furniture -- we got her a full size bed. I debated whether we should start with it on the floor, but decided that would just cause for 1 more transition, so we'd try it up on the frame first and only put it down if necessary. She is too little to be able to climb into the bed on her own since it's so high, but can get out if she wants to. We encourage her to stay in and tell her that "big girls only get out of bed with mommy and daddy come in." Only a couple of times during nap time has she gotten out, and then proceeded to take all of her clothes out of the dresser and put all of her books on the floor.
There is no way to put her bed against a wall in the room, so she just has 3/4 size bedrails on each side. There is a headboard at the top, and a very low footboard at the bottom. She moved around quite a bit in the crib, but seems to do so less in the new bed, plus she has sooo much room, that she starts out in the middle and can move quite a bit without getting anywhere near the edge. She fell out one time, but it was when she was already awake and sitting up near the end of the bed waiting for us in the morning, and she leaned a little too far.
I actually think moving her when she was so young is what has made it so easy, since she's not yet in the totally defiant stage. I say go for it and see how he does in the bed you were planning on using anyway. The worst thing that happens is you have to try something else.