Try to loose some sats but try not too loose too many. 
 
Try @jimbocoin seed picker solitaire game as a how-to create bitcoin seeds out of a poker card set. You get the bitcoin seed out of a shuffled poker tab and that same can be later imported to the software wallet of choice. https://jimbojw.github.io/seed-picker-solitaire/seed-picker-solitaire.pdf There are other methods to acquire seeds out of irl randomness, such as dice or blindfolded choosing them. but the solitaire poker is a pretty nice and fun one.

Ideally you would like to pre-sign your transactions over an off-line device (such as coldcard or the mk3 or foundation devices) and then go to your online machine with the transaction already signed an ready to just be broadcasted. 

 Oops. Miss-typed about the off-line signers. Meant to write the @SeedSigner project, which additionally, is a DIY project cheap and pretty secure you could buy yourself but no much more a hundred bucks. 🤙  https://seedsigner.com/