Hi there, welcome 🙂

I’ll try to answer your questions:

+ What toys do you reccomed that are cheap, safe, natural and worth the money?

cheap/ free things could be paper towel rolls stuffed with oat hay, willow branches (or other safe twigs), phone books for shredding, cardboard boxes turned into hides for “bun-struction”. My bunnies also love palm plates (if you look up organic palm plates there are lots of options), seagrass mats, and anything made of willow (esp fresh willow).

+ What wooden diy toys can I make? (I have access to lots of bunny safe wood and can do complicated DIY stuff.)

My buns tend to like things that are twig-like. They ignore toys made out of solid wood. So if you have bunny-safe trees around they would love twigs and small branches to nibble on. Pine cones are also fun, as long they are are old enough that they aren’t sappy anymore. Looking again at the pics I see you already have some of these things! If you search the forum for “DIY toys” there are lots of threads over the years with people posting their creations.

+ Do you see any poblems or concerns with their setup?

So I might be having a little trouble picturing how it’s all connected. Is the floor level part of it? Or is that part of the play area? Or is the hutch just the connected “rooms”?  I do like the idea of having some rooms, but in general bunnies like to have more space to hop in one direction. I think if you removed most of the partitions between the areas they would like it more and be more comfortable. Ideally they could even run a little while inside. This is especially important if they are going to be spending a lot of time inside it.

The other thing that comes to mind is temperature. It’s great it’s under the deck so it’s in the shade, but with the solid partitions between the “rooms”, it might get hot. If it gets over 80 you’ll want to have a way to cool them down or bring them to a cooler spot. Since you mentioned they are fluffy this is especially important.

Last thing is flooring. I would keep an eye on the carpet or fabric areas to make sure they don’t eat it. If so you’ll want to swap it out for something safer, like seagrass, paper, or cardboard. Having a little wire is fine, but replacing with a more solid flooring will make it easier for them to run around a bit (they don’t tend to move much on wire).

It’s also good to have a backup water source, especially if you aren’t there all the time to notice if a bowl gets knocked over, so you might have a bottle and a bowl, just incase.

+ Is 20 sq. feet big enough for them?

So, this depends on how much time they get to exercise. I think once you get the 12 x 12 exercise pen done, then yes. It is a large hutch, and I think that with some modifications to help them move around a bit more easily in the hutch it will be better. But with that size and type of enclosure they really need exercise time in a larger area daily (4 hours per day is the usual recommended minimum).  If you can make it a priority to let them run in their exercise area daily, then they will be much happier and healthier.

I almost wonder if you could enclose the floor level, and add a ramp or steps down, so you could easily let them out to run around each day? Or maybe enclose it fully permanently so they could have 24/7 access to it? Or maybe they get to run around all day and you can enclose them at night?  Since it sounds like you have some access to tools etc, check out the ideas for predator-safe outdoor enclosures and runs here (although as you prob already know don’t count on chicken wire to keep predators out):

Safe Outdoor Runs

Might give you some ideas!

That sounds like a good play schedule!

Yes that still sounds good to me!