Farmer's handles would have been on my list as well but I currently use my trap bar for carries. Farmer's handles will absolutely be added but not now.
A bigger log would be a good idea but as I already have one I would rather get something completely new. I also know that @T3hPwnisher has a small log which he made into a bigger log. I might try that.
I did not have stones on my list at all to be honest. Problem would be I could only get one mould for now and I don't know how much I would benefit from having a stone when I am not competing in the near future.
I could use the sled outside and it will have a high spot on my priority list but since I can't use it in the winter I will probably get one next spring.
I do have a very good axle.
A circus db would not be high on my priority lift because it will be a long time till I can compete again and even when I do it seems to be very rarely featured in competitions here.
A GHR would really be a luxus-addition for me.
@bighdx : A, was really confused why someone would suggest a pad for squatting
@strongmanjoe : Would freaking love tires but have no space unfortunately.
Also I forgot to mention something very important: My main goal needs to be to improve my static strength. That's what really hinders me at the moment. Especially my lower body strength (deadlifting!). That is also why I was leaning towards a SSB.
Thanks for all your suggestions they are really helpful!