My cat needed somewhere to climb, he used to climb doors and TV ( He broke one), with this simple print you can make him a floating bed and even the stairs, fully improvable with your own needs, add maybe a foating cage, scraper, a tree...

MY CAT IS 6,5 KG!

Also you can try only making the floating bed, mine only uses that and because it isnt very high he just jumps on it.

Here you go what I used and how i made it. Unfortunattely i havent got many photos.

Generic MEASURES:

6,5mm screw holes

4,5 CM Screws is okay.

Rope, any kind, bigger, better

Fabric, I used some of the ikea that i had, just make shure you can hold yourcat with that.

PETG, 15% Infill Gyroid and 5 walls

Each STAIR you need:

-6 meters of rope 5,5mm diameter + -, depending how large you make it

I made myself about 40 cm and DEFINITLY WAS too large, so INSTEAD I RECCOMEND ABOUT 25 CM IN TOTAL but do it like youy need,  just cut the PVC how you want or else wood, you will save a lot of rope and space.

-It isnt glued, i just used PVC tubes that went right on the holes,also made a little hole on the pvc before mouting it and putting the edge of the rope there, then just inserted the tube with the rope on the hole, also made a little space for the rope on the printed mount.

-Finnaly after finishing the rope just do the same on the other edge of the PVC and insert the rope, then the top part.

BED SHELF

-PVC tube, +- 20.5mm

Some fabric, i myself used one from ikea that i had, just make shure it can hold your cat, mine is 6,5kg and very big (not fat :/ ) For holding the fabric i myself made more holes on the start ( the printed mount), in the middle holed the pvc, and in the end.

DONT SCREW WITH THE FABRIC ON!

Or maybe just join the fabric

BE CREATIVE

Later just add the fabric and then manually or slowly use screws to attach it to the PVC and the mount.

Please MAKE SURE IT CANNOT HARM YOUR CAT OR YOURSELF BEFORE INSTALLING IT. 

This is a beta model, didnt improve it it just works for me.