I need a giraffe frame

I have an old giraffe. I made the frame many years ago from a cut apart
bicycle (and various other parts). The frame is ugly and I’m not really
sure it’s structurally sound. When I was 15 years old this didn’t seem to
bother me much but now that I’m older (and more brittle) I’m thinking I’d
like to replace the frame with a sturdy frame. Are there any inexpensive
options out there? I’d like to stay under 6’ preferably 5’.

If anyone is interested in seeing the old frame it’s pictured in my
“collection” at http://www.unicyclist.com/gallery/Michael_Grant/aae